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Stable Isotope Laboratory
Earth and Planetary Sciences
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Stable Isotope Laboratory Publications (1997-2017)

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Journal Number
Nature 22
Science 19
Geology 23




  • Batista, F.B., Schubert, C., Ravelo, A.R.C, and McCarthy MD. Examining compound-specific δ15N of amino acids (δ15NAA) as a new proxy for sedimentary organic nitrogen (In Review: Geochemical et Cosmochimica Acta)
  • McMahon, K., Williams, B., Guilderson, T., Glynn, D., and McCarthy, M.D. Calibrating amino acid 13C and 15N offsets between polyp and protein skeletons to develop deep-sea proteinaceous corals as paleoceanographic archives. (In Review, GCA)
  • McMahon, K. and McCarthy, M.D. Embracing variability in amino acid δ15N fractionation: Mechanisms, implications, and applications for trophic ecology (In Press: Ecosphere, special issue on Biomarkers in Trophic Ecology)
  • Misarti, N., Gier, E.G., Finney, B., Barnes, K., and McCarthy, M.D. Nitrogen isotopes of amino acids in archeological shell: a new paleo-nitrogen isotopic baseline tracer in near shore systems? (In Review: PLOS one)
  • Walker, B., Beaupre, S., Guilderson, T., Druffel, E.R.M., and McCarthy, M.D. (2016) Stable and radiocarbon isotopic composition and reactivity across the marine organic matter size continuum: implications for carbon cycling in the central Pacific Ocean. Geophysical Research Letters (In Press)
  • Walker, B., Beaupre, S., Guilderson, T., McCarthy, M.D., and Druffel, E.R.M. (2016) Control of the Microbial C pump: Universal Size-Age-Composition Relationships within Marine Organic Matter Nature Geoscience (In Press).
  • Yamaguchi, Y. and McCarthy, M.D. Sources and transformation processes of dissolved and particulate organic nitrogen in the North Pacific Subtropical Gyre indicated by compound-specific δ15N analysis of amino acids (In revision: Geochimimca et Cosmochimica Acta)
  • Zupcic-Moore, J., Ruiz-Cooley, I., Koch, K., Gier, E., and McCarthy MD. High resolution bulk and compound specific stable isotope records from whaling era sperm whale teeth in the Eastern Tropical Pacific (Submitted to: Marine Ecology Progress Series) (sub: July 25, 2016)




  • Bour, A. L. .Walker, B.D., Broek, T.A., and McCarthy, M.D. (2016) Radiocarbon Analysis of Individual Amino Acids: Carbon Blank Quantification for A Small-Sample High Pressure Liquid Chromatography Purification Method. Analytical Chemistry ; doi.org/10.1021/acs.analchem.5b03619
  • Cook, M.S., A.C. Ravelo, A. Mix, I.M. Nesbitt, N.V. Miller, Tracing Bering Sea circulation with benthic foraminiferal stable isotopes during the Pleistocene, Deep Sea Research, 125, DOI:10.1016/j.dsr2.2016.02.006, (2016).
  • Dyez, K., A.C. Ravelo and A. Mix. Evaluating drivers of Pleistocene Eastern Tropical Pacific sea surface temperature, Paleoceanography, (in press, 2016).
  • Galeotti, S., R. DeConto, T. Naish, P. Stocchi, F. Florindo, M. Pagani, P. Barrett, S. M. Bohaty, L. Lanci, D. Pollard, S. Sandroni, F. Talarico, J. C. Zachos, 2016, Antarctic Ice-Sheet variability across the Eocene-Oligocene boundary climate transition. Science, DOI: 10.1126/science.aab0669
  • Lauretano, V., F. J. Hilgen, J. C. Zachos, and L. J. Lourens, 2016, Astronomically tuned age model for the early Eocene carbon isotope events: A new high-resolution d13Cbenthic record of ODP Site 1263 between ~49 and ~54 Ma. Newsletters on Stratigraphy, v. 49/2, p.383–400
  • Mompean, C., Bode, A., Gier E.G., and McCarthy, M.D. (2016) Bulk vs. amino acid stable N isotope estimations of metabolic status and contributions of nitrogen fixation to size-fractionated zooplankton biomass in the subtropical N Atlantic. Deep Sea Research-II, 114, 137-148 doi:10.1016/j.dsr.2016.05.005
  • Penman, D.E., S. Kirtland Turner, P. F. Sexton, R. D. Norris, A. J. Dickson, S. Boulila, A. Ridgwell, R. E. Zeebe, J. C. Zachos, A. Cameron, T. Westerhold and U. Röhl, 2016, An abyssal carbonate compensation depth overshoot in the aftermath of the Palaeocene–Eocene Thermal Maximum. Nat. Geoscience, v. 9, p.575-580, DOI: 10.1038/NGEO2757
  • Zeebe, R., A. Ridgwell, J.C. Zachos, 2016, Anthropogenic carbon release rate unprecedented during past 66 million years. Nat. Geosci. v.9, DOI: 10.1038/NGEO2681




  • Abels, H.A., V. Lauretano, A. van Yperen, T. Hopman, J. C. Zachos, L. J. Lourens, P. D. Gingerich, and G. J. Bowen, 2015, Carbon isotope excursions in paleosol carbonate marking five early Eocene hyperthermals in the Bighorn Basin, Wyoming, Clim. Past Discuss., 11, 1857-1885, doi:10.5194/cpd-11-1857–1885, 2015
  • Galeotti, S. Moretti, M; Cappelli, C;Phillips, J; Lanci, L; Littler, K; Monechi, S; Petrizzo, MR; Silva, IP ; Zachos, JC. , 2015, The Bottaccione section at Gubbio, central Italy: a classical Paleocene Tethyan setting revisited. Newsletter on Stratigraphy, v. 48, p. 325-339. DOI: 10.1127/nos/2015/0067
  • Hollis, C.J., B. R. Hines, K. Littler, V. Villasante-Marcos, D. K. Kulhanek, C. P. Strong, J. C. Zachos, S. M. Eggins, L. Northcote, and A. Phillips, 2015, The Paleocene-Eocene Thermal Maximum at DSDP Site 277, Campbell Plateau, southern Pacific Ocean. Clim. Past Discuss., 11, 243-278, 2015 www.clim-past-discuss.net/11/243/2015/doi:10.5194/cpd-11-243-2015.
  • Iwasaki, S., K. Takahashi, Y. Kanematsu, H. Asahi, J. Onodera, and A. C. Ravelo, Paleoproductivity and paleoceanography of the last 4.3 Myrs at IODP Expedition 323 Site U1341 in the Bering Sea based on biogenic opal content, Deep Sea Research, 2015.
  • Knudson, K. and A.C. Ravelo, Enhanced subarctic Pacific stratification and nutrient utilization during glacials over the last 1.2 Myr, Geophysical Research Letters, DOI:10.1002/2015GL066317 (2015).
  • Knudson, K. and A.C. Ravelo, North Pacific Intermediate Water circulation enhanced by the closure of the Bering Strait, Paleoceanography, DOI:10.1002/2015PA002840 (2015).
  • Larsen T, , L. T. Bach, R. Salvatteci, M. Ventura, Y. V. Wang, N. Andersen, and M. D. McCarthy (2015). Assessing the potential of amino acid 13C patterns as a carbon source tracer in marine sediments: effects of algal growth conditions and sedimentary diagenesis. (Biogeosciences, 12, 4979-4992. doi:10.5194/bg-12-4979-2015).
  • Lauretano, V., K. Littler , M. Polling , J. C. Zachos, and L. J. Lourens, 2015, Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Clim. Past Discuss., 11, 1795–1820, 2015 www.clim-past-discuss.net/11/1795/2015/ doi:10.5194/cpd-11-1795-2015.
  • McMahon, K., McCarthy, M.D., Larsen, T., Sherwood, O. Guilderson, T. (2015), Millennial Scale Plankton Regime Shifts in North Central Pacific Grye Science 350, 1530-1533.
  • McMahon, K., Thorold, S., Esdon, T.S, and McCarthy, M.D. (2015) Quantifying trophic fractionation of amino acid nitrogen isotopes in a marine fish. Limnology and Oceanography 60: 1076-87.
  • McMahon, M. J. Polito, S.Abel, M.D. McCarthy, and S. R. Thorrold (2015). Carbon and nitrogen isotope fractionation of amino acids in an avian marine predator, the Gentoo penguin (Pygoscelis papua).” Ecology and Evolution 5: 1278-1290
  • Stroynowski, S., A.C. Ravelo and D.H. Andreasen, A Pliocene to Recent History of the Bering Sea at Site U1340A, IODP Expedition 323, Paleoceanography, 30, 1641–1656, DOI:10.1002/2015PA002866 (2015).
  • Uchikawa, J., D. E. Penman, J. C. Zachos, R. E. Zeebe, 2015, Experimental evidence for kinetic effects on B/Ca in synthetic calcite: Implications for potential B(OH)4- and B(OH)3 incorporation. Geochim. et Cosmo. Acta 150: 171–191.
  • Westerhold, T., U. Röhl, T. Frederichs, S. M. Bohaty, and J. C. Zachos, 2015, Astronomical calibration of the geological timescale: closing the middle Eocene gap. Clim. Past Discuss., 11, 1665-1699, 2015, www.clim-past-discuss.net/11/1665/2015/doi:10.5194/cpd-11-1665-2015




  • Batista, F.C., A.C. Ravelo, J. Crusius, M.A. Casso, and M.D. McCarthy. Compound specific amino acid δ15N in marine sediments: a new approach for studies of the marine nitrogen cycle, Geochimica et Cosmochimica Acta, 142, 553-569, DOI: 0.1016/j.gca.2014.08.002, (2014).
  • Brault EK, Koch PK, Gier E, Ruiz-Cooley RI, Zupcic J, Gilbert KN, McCarthy MD (2014) Effects of decalcification on bulk and compound-specific nitrogen and carbon isotope analyses of dentin. Rapid Communications in Mass Spectrometry 28: 2744-2752
  • Broek, T, and McCarthy, M.D. (2014) A New Approach to 15N compound-specific amino acid trophic position measurements: preparative high pressure liquid chromatography technique for purifying underivatized amino acids for stable isotope analysis Limnology and Oceanography Methods, 12, 2014, 840-852.
  • Dyez, K. and A.C. Ravelo. Glacial-interglacial cycles in tropical Pacific warm pool upwelling, Geophysical Research Letters, 41, DOI:10.1002/2014GL061639, (2014).
  • Erhardt, A. M., C. E. Reimers, D. Kadko and A. Paytan. 2014. Records of trace metals in sediments from the Oregon shelf and slope: Investigating the occurrence of hypoxia over the past several thousand years. Chemical Geology 382: 38-43.
  • Hopkins, JB III, Koch PL, Ferguson JM, Kalinowski ST (2014) The changing anthropogenic diets of American black bears over the past century in Yosemite National Park. Frontiers in Ecology and the Environment 12: 107–114 (cover article)
  • Kurle CM, Koch PL, Tershy BR, Croll DA (2014) The effects of sex, tissue type, and dietary components on stable isotope discrimination factors (Δ13C and Δ15N) in mammalian omnivores. Isotopes in Environmental and Health Studies 50: 307-321
  • Littler, K., U. Rohl, T. Westerhold, and J.C. Zachos, 2014, A high-resolution benthic stable-isotope record for the South Atlantic: Implications for orbital-scale changes in Late Paleocene–Early Eocene climate and carbon cycling. Earth Planet. Sci. Lett. 401:18-30.
  • Oster, J.L., I. P. Montañez, R. Mertz-Kraus, W. D. Sharp, G. M. Stock, H. J. Spero, J. Tinsley, J. C. Zachos, 2014, Millennial-scale variations in western Sierra Nevada precipitation during the last glacial cycle MIS 4/3 transition. Quaternary Res., 82: 236-248.
  • Pälike, C., M. L. Delaney, and J. C. Zachos, 2014, Deep-sea redox across the Paleocene-Eocene thermal maximum, Geochem. Geophys. Geosyst.,15, doi:10.1002/2013GC005074.
  • Penman, D. E., B. Hönisch, R.E. Zeebe, E. Thomas, & J. C. Zachos, 2014, Rapid and sustained surface ocean acidification during the Paleocene-Eocene Thermal Maximum. Paleoceanography, 29, doi:10.1002/2014PA002621.
  • Prouty, N.G., Roark, E.B., Koenig, A., Demopoulos, A.W., Batista, F.,Kocary, D. B., Selby, D., McCarty, M.D., and Mienis, F. (2014) Deep-sea coral record of human impact on watershed quality in the Mississippi River Basin. Global Biogeochemical Cycles, 28, doi: 10.1002/2013GB004754.
  • Ruiz-Cooley RI, Koch PL, Fiedler PC, McCarthy MD (2014) Carbon and nitrogen isotopes from top predator amino acids reveal rapidly shifting ocean biochemistry in the outer California Current. PLOS One 9(10): e110355
  • Schiff, J.T., F. Batista, O.A. Sherwood, T.P. Guilderson, T.M. Hill, A.C. Ravelo, K.W. McMahon, and M.D. McCarthy, Compound specific amino acid d13C patterns in deep-sea proteinaceous coral: implications for reconstructing detailed d13C records of exported primary production, Marine Chemistry, 166, 82-91, (2014).
  • Sherwood, O. S., Guilderson, T., Batista, F., Schiff, J., and M.D. McCarthy (2014). Increasing subtropical North Pacific Ocean nitrogen fixation since the Little Ice Age. Nature (505), 78-83. doi:10.1038/nature12784.a
  • Snell KE, Koch PL, Druschke P, Foreman BZ, Eiler JM (2014) High elevation of the ‘Nevadaplano’ during the Late Cretaceous. Earth and Planetary Science Letters 386: 52-63
  • Vokhshoori, N. and *McCarthy, M.D. (2014) Compound-specific δ15N amino acid measurements in littoral mussels in the California upwelling ecosystem: a new approach to generating baseline δ15N isoscapes for coastal ecosystems. PLOS One Vol 9 (6), e98087. doi:10.1371/journal.pone.0098087 (*McCarthy is co-corresponding author)
  • Vokhshoori, N., Larsen, T., and *McCarthy, M.D. (2014) Reconstructing δ13C isoscapes of phytoplankton production in a coastal upwelling system with amino acid isotope values of littoral mussels. Marine Ecology Progress Series. 504; 59-72. (*McCarthy is co-corresponding author)
  • Walker, B., Guilderson, T., Okimura, K., Peacock, M., and McCarthy, M.D. (2014) Radiocarbon signatures and size–age–composition relationships of major organic matter pools within a unique California upwelling system Geochimica et Cosmochimca Acta.126; 1-17. doi: 10.1016/j.gca.2013.10.039
  • Zhongwu M., E. Gray, E. Thomas, B. Murphy, J. Zachos and A. Paytan, 2014, Carbon sequestration during the Palaeocene-Eocene Thermal Maximum by an efficient biological pump. Nat. Geosci., 7, 382-388, DOI: 10.1038/NGEO2139.




  • Broek, T., Walker, B., Andreasen, D. and McCarthy, M.D. (2013) High-precision measurement of phenylalanine δ15N values for environmental samples: A new approach coupling high-pressure liquid chromatography purification and elemental analyzer isotope ratio mass spectrometry. Rapid Communications in Mass Spectrometry 2013, 27, 2327–2337. DOI: 10.1002/rcm.6695.
  • Calleja, M., Batista, F., Peacock, Kudela, R., and McCarthy, M.D.. (2013) Changes in compound specific δ15N amino acid signatures and D/L ratios in marine dissolved organic matter induced by heterotrophic bacterial reworking. Marine Chemistry, 149; 32-44.
  • Domingo L, Koch PL, Hernández Fernández M, Fox DL, Domingo MS, Alberdi MT (2013) Late Neogene and Early Quaternary Paleoenvironmental and Paleoclimatic Conditions in Southwestern Europe: Isotopic Analyses on Mammalian Taxa. PLoS ONE 8(5): e63739
  • Erhardt, A.M., H. Pälike, and A. Paytan, 2013. High-resolution recordof export production in the eastern equatorial Pacific across the Eocene-Oligocene transition and relationships to global climatic records. Paleoceanography. 28, 1–3 ,doi:10.1029/2012PA002347
  • Galbraith, Eric D., Markus Kienast and NICOOP working group; including M.D. McCarthy (2013). The acceleration of oceanic denitrification during deglacial warming. Nature Geoscience, 6, 579-584. DOI: 10.1038/NGEO1832
  • Germain LR, Koch PL, Harvey JT, McCarthy MD (2013) Nitrogen isotope fractionation in amino acids from harbor seals: implications for compound-specific trophic position calculations. Marine Ecology Progress Series 482: 265–277, doi: 10.3354/meps10257.
  • Guilderson, T., McCarthy, M.D., Dunbar, R.B., Englebrecht, A., and Roark, E.B. (2013) Late holocene variations in Pacific surface circulation and biogeochemistry inferred from proteinaceous deep-sea corals. Biogeosciences 10, 6019-6028. doi:10.5194/bg-10-6019-2013.
  • Hansen J, Kharecha P, Sato M, Masson-Delmotte V, Ackerman F, et al., 2013, Assessing "Dangerous Climate Change": Required Reduction of Carbon Emissions to Protect Young People, Future Generations and Nature. PLoS ONE 8(12): e81648. doi:10.1371/journal.pone.0081648.
  • Kurle CM, Finkelstein ME, Smith KR, George D, Ciani D, Koch PL, Smith DR (2013) Discrimination Factors for Stable Isotopes of Carbon and Nitrogen in Blood and Feathers from Chicks and Juveniles of the California Condor. The Condor 115: 492-500
  • Larsen T, Ventura M, Andersen, N., Obrien, D.O., Piatkowski U., and McCarthy, M.D. (2013) Tracing Carbon Sources through Aquatic and Terrestrial Food Webs Using Amino Acid Stable Isotope Fingerprinting. PLOS One Vol. 8 (9), e73441. doi:10.1371/journal.pone.0073441
  • McCarthy, M.D., Lehman J. and Kudela, R. (2013) Compound-specific amino acid d15N patterns in marine algae: Tracer potential for cyanobacterial vs. eukaryotic organic nitrogen sources in the ocean. Geochimica et Cosmochimica Acta 103; 104-120.
  • Pollard, D., L. R. Kump, and J.C. Zachos, 2013, Interactions between carbon dioxide, climate, weathering, and the Antarctic ice sheet in the earliest Oligocene. Global and Planetary Change 111, 258–267.
  • Qunitana-Krupinski, N.B, J.R., Marlon, A. Nishri, J.H. *Street, A. Paytan. 2013.Climatic and human controls on the late Holocene fire history of northern Israel. Quaternary Research .DOI:10.1016/j.yqres.2013.06.012
  • Roberts, A.P., L. Sagnotti, F. Florindo, S. M. Bohaty, K. L. Verosub, G. S. Wilson and J. C. Zachos, 2013, Environmental magnetic record of paleoclimate, unroofing of the Transantarctic Mountains, and volcanism in late Eocene to early Miocene glaci-marine sediments from the Victoria Land Basin, Ross Sea, Antarctica. Journal Geophysical Research: Solid Earth., 118, 1–17, doi:10.1002/jgrb.50151.
  • Ruiz-Cooley, I. Ballance, L., and McCarthy, M.D. (2013) Range expansion of the jumbo squid in the NE Pacific: 15N decrypts multiple origins, migration and habitat use. PLOS One Vol 8 (3), e59651.
  • Schlung, S.A., A. C. Ravelo, M. S. Cook, I.W. Aiello, T. P. Guilderson, Z. Stroynowski, D. H. Andreasen, J. P. LaRiviere, K. A. Dyez and K. Takahashi, Millenial-scale climate change and intermediate water circulation in the Bering Sea from 90 ka: A high resolution record from IODP Site U1340, Paleoceanography, doi:10.1029/2012PA002365, (2013).
  • Snell KE, Thrasher BL, Eiler JM, Koch PL, Sloan LC, Tabor NJ (2013) Hot summers in the Bighorn Basin during the early Paleogene greenhouse. Geology 41: 55-58
  • Yeakel JD, Guimarães Jr PR, Bocherens H, Koch PL (2013) The impact of climate change on the structure of Pleistocene food webs across the mammoth steppe. Proceedings of the Royal Society B: Biological Sciences 280 (1762): 20130239
  • Zeebe, R., and J.C. Zachos, 2013, Long-term legacy of massive carbon input to the Earth system: Anthropocene vs. Eocene. Phil. Trans. R. Soc. A - Issue371: 20120006. http://dx.doi.org/10.1098/rsta.2012.0006.




  • Bohaty, S.M., M.L. Delaney, J.C. Zachos, 2012, Foraminiferal Mg/Ca Evidence for Southern Ocean Cooling across the Eocene-Oligocene Transition. Earth Planet. Sci. Lett., v. 317-318, Pages 251-261
  • Crowley BE, Godfrey LR, Guilderson TP, Zermeño P, Koch PL, Dominy NJ (2012) Extinction and ecological retreat in a community of primates. Proceedings of the Royal Society B: Biological Sciences 279: 3597-3605
  • Domingo L, Koch PL, Grimes ST, Morales J, López-Martínez N (2012) Isotopic paleoecology of mammals and the Middle Miocene Cooling event in the Madrid Basin (Spain). Palaeogeography, Palaeoclimatology, Palaeoecology 339–341: 98–113
  • Dyez, K. and A.C. Ravelo. Late Pleistocene tropical Pacific temperature sensitivity to radiative greenhouse gas forcing, Geology, doi:10.1130/G33425.1, (2012).
  • Ford, H. L., A.C. Ravelo and S. Hovan, A Deep Eastern Equatorial Pacific Thermocline during the Early Pliocene Warm Period, Earth and Planetary Science Letters, 355-356, 152-161, doi:10.1016/j.epsl.2012.08.027, (2012).
  • Fox-Dobbs K, Nelson AA, Koch PL, Leonard JA (2012) Faunal isotope records reveal trophic and nutrient dynamics in 20th century Yellowstone grasslands. Biology Letters,
  • Germain LR, Koch PL, Harvey JT, McCarthy MD (2012) Stable carbon and nitrogen isotopes in multiple tissues of wild and captive harbor seals (Phoca vitulina) off the California coast. Marine Mammal Science 28: 542–560
  • Gibbs, S.J., P. R. Bown, B. H. Murphy, A. Sluijs, K. M. Edgar, H. Pälike, C. T. Bolton, and J. C. Zachos, 2012, Scaled biotic disruption during early Eocene global warming events. Biogeosciences, v.9, 4679-4688.
  • Hollis, C.J., K.W.R. Taylor, L. Handley, R.D. Pancost, M. Huber, J.B. Creech, B. Hines, E.M. Crouch, H.E.G. Morgans, J.S. Crampton, S. Gibbs, S. Schouten, P.N. Pearson, and J.C. Zachos, 2012, Early Paleogene temperature history of the Southwest Pacific Ocean: Reconciling proxies and models. Earth Planet. Sci. Lett., V. 349–350, p. 53–66.
  • Hönisch, B., and others, 2012, The Geological Record of Ocean Acidification. Science 335, 1058, DOI: 10.1126/science.1208277.
  • Hopkins JB, Koch PL, Ferguson JM, Greenleaf SS, Kalinowski ST (2012) Stable isotopes to detect food-conditioned bears and evaluate human-bear management. The Journal of Wildlife Management 76: 703-713
  • Hückstädt LA, Burns J, Koch PL, McDonald BI, Crocker DE, Costa DP (2012) Being a specialist in a changing environment: the diet of the crabeater seal along the western Antarctica Peninsula. Marine Ecology Progress Series 455:287-301
  • Hückstädt LA, Koch PL, McDonald BI, Goebel M, Crocker D, Costa DP (2012) Stable isotope analyses reveal the complex trophic ecology of a top marine predator, the southern elephant seal. Oecologia 169: 395-406
  • John, C., N. R. Banerjee, F. J. Longstaffe, C. Sica, K. R. Law, and J. C. Zachos, 2012, Clay assemblage and oxygen isotopic constraints on the weathering response to the Paleocene-Eocene thermal maximum, east coast of North America. Geology, v. 40, p. 591-594, doi:10.1130/G32785.1.
  • Kim SL, Casper DR, Galván-Magaña F, Ochoa-Díaz R, Hernández-Aguilar SB, Koch PL (2012) Carbon and nitrogen discrimination factors for elasmobranch soft tissues based on a long-term controlled feeding study. Environmental Biology of Fishes 95:37–52
  • Kim SL, Koch PL (2012) Methods to collect, preserve, and prepare elasmobranch tissues for stable isotope analysis. Environmental Biology of Fishes 95:53–63
  • Kim SL, Martínez del Rio C, Casper D, Koch PL (2012) Isotopic incorporation rates for shark tissues from a long-term captive feeding study. Journal of Experimental Biology 215: 2495-2500
  • Kim SL, Estes JA, Tinker MT, Koch PL (2012) Ontogenetic and among-individual variation in foraging strategies of northeast Pacific white sharks based on stable isotope analysis. PLoS One 7(9): e45068
  • LaRiviere, J. P., A. C. Ravelo, A. Crimmins, P. S. Dekens, H. L. Ford, M. Lyle and M. W. Wara, Decoupling of oceanic warmth and atmospheric carbon dioxide forcing in the late Miocene, Nature, 486, 97-100, doi:10.1038/nature11200, (2012).
  • Larrasoana, J.C., A.P. Roberts, L. Chang, S.A. Schellenberg, J.D. Fitz Gerald, R.D. Norris, and J.C. Zachos, 2012, Magnetotactic bacterial response to Antarctic dust supply during the Palaeocene-Eocene thermal maximum. Earth Planet. Sci. Lett., v. 333, p. 122-133 DOI: 10.1016/j.epsl.2012.04.003.
  • Lyle, M., L. Heusser, A. C. Ravelo, M. Yamamoto, J. Barron, N. Diffenbaugh, T. Herbert and D. Andreasen, Out of the tropics: The Pacific, Great Basin Lakes, and the Pleistocene water cycle in the western US, Science, 337, doi:10.1126/science.1218390, (2012).
  • Moritz GL, Fourie N, Yeakel JD, Phillips-Conroy JE, Jolly CJ, Koch PL, Dominy NJ (2012) Baboons, water, and the ecology of oxygen stable isotopes in an arid hybrid zone. Physiological and Biochemical Zoology 85: 421-430 (cover article)
  • Robinson, R., Markus Kienast, and NICOOP working group (including M.D. McCarthy) (2012) A review of nitrogen isotopic alteration in marine sediments. Paleoceanography. 27, PA4203, doi:10.1029/2012PA002321, 2012.
  • Rohling, E., & Paleosense Project Members., 2012, Making sense of palaeoclimate sensitivity. Nature, 491, 683-691: doi:10.1038/nature11574.
  • Slotnick, B.S., G. R. Dickens, M. J. Nicolo, C. J. Hollis, J. S. Crampton, J. C. Zachos, and A. Sluijs, 2012, Large amplitude variations in carbon cycling and terrestrial weathering during the latest Paleocene and earliest Eocene: the record at Mead Stream, New Zealand. J. of Geology, v.120, n.5, DOI: 10.1086/666743.
  • Sluijs, A., J.C. Zachos, R.E. Zeebe, 2012, Constraints on hyperthermals. Nat. Geoscience, v. 5, p.230, DOI: 10.1038/ngeo1423.
  • Walker, B. and McCarthy, M.D. (2012) Elemental and isotopic characterization of dissolved and particulate organic matter in a unique California upwelling system: importance of size and composition in the export of labile material. Limnology and Oceanography. 57(6), 1757–1774.
  • Wheatley PV, Peckham H, Newsome SD, Koch PL (2012) Estimating marine resource use by the American crocodile (Crocodylus acutus) in southern Florida. Marine Ecology Progress Series 447: 211-229
  • Yeakel JD, Guimarães PR Jr, Novak M, Fox-Dobb K, Koch PL (2012) Probabilistic patterns of interaction: the effects of link-strength variability on food web structure. Journal of the Royal Society Interface 9: 3219-3228




  • Brown, R.E, L. Anderson, E. Thomas, and J.C. Zachos, 2011, A core-top calibration of B/Ca in the benthic foraminifers Nuttallides umbonifera and Oridorsalis umbonatus: A proxy for Cenozoic bottom water carbonate saturation. Earth Planet. Sci. Lett. v. 310, p. 360-368. doi:10.1016/j.epsl.2011.08.023
  • Crowley BE, Thorén S, Rasoazanabary E, Vogel ER, Barrett MA, Zohdy S, Blanco MB, McGoogan KC, Arrigo-Nelson SJ, Irwin MT, Wright PC, Radespiel U, Godfrey LR, Koch PL, Dominy NJ (2011) Explaining geographic variation in isotope composition of mouse lemurs (Microcebus). Journal of Biogeography 38: 2106-2121
  • Freeman KH, Mueller KE, Diefendorf AF, Wing SL Koch PL (2011) Clarifying the influence of water availability and plant types on carbon isotope discrimination by C3 plants. Proceedings of the National Academy of Sciences of the United States of America 108: E59-E60
  • Lunt, D., A. Ridgwell, A. Sluijs, J. Zachos, S. Hunter, and A. Haywood, 2011, A model for orbital pacing of methane hydrate destabilization during the Palaeogene. Nature Geoscience. v. 4, p. 775-778.DOI: 10.1038/NGEO1266
  • Scher, H.D., S. M. Bohaty, J. C. Zachos and M. L. Delaney, 2011, Two-stepping into the icehouse: East Antarctic weathering during progressive ice-sheet expansion at the Eocene −Oligocene transition. Geology, v. 39;383-386 doi: 10.1130/G31726.1
  • Sherwood, O.A., Lehmann, M.F., Schubert, C., David B. Scott and McCarthy, M.D. (2011) Nutrient regime shift in Northwest Atlantic slope waters indicated by compound-specific amino acids δ15N of deep-sea gorgonian corals. Proceedings of the National Academy of Sciences 108(3); 1011-1015 (DOI: 10.1073/pnas.1004904108).
  • Ting S-Y, Tong Y-S, Clyde WC, Koch PL Meng J, Wang Y-Q, Bowen GJ, Li Q, Snell KE (2011) Asian early Paleogene chronology and mammalian faunal turnover events. Vertebrata PalAsiatica 49: 1-28
  • Walker, B., Beaupre, S., Guilderson, T., Druffel, E.R.M., and McCarthy, M.D. (2011) Large-volume ultrafiltration for the study of radiocarbon signatures and size vs. age relationships in marine dissolved organic matter. Geochimica et Cosmochimica Acta 75; 5187-5202.
  • Westerhold, T., U. Röhl, B. Donner, H. K. McCarren, J. C. Zachos, 2011, A complete high-resolution Paleocene benthic stable isotope record for the central Pacific (ODP Site 1209). Paleoceanography 26, PA2216, doi:10.1029/2010PA002092.
  • Zhuang G, Hourigan JK, Koch PL, Ritts BD, Kent-Corson ML (2011) Isotopic Constraints on Intensified Aridity in Central Asia around 12 Ma. Earth and Planetary Science Letters 312: 152-163




  • Bowen, G.J. and J.C. Zachos, 2010, Rapid carbon sequestration at the termination of the Paleocene-Eocene thermal maximum. Nature Geosciences. doi:10.1038/ngeo1014.
  • Chun, C. O. J., M. L. Delaney, and J. C. Zachos, 2010, Paleoredox changes across the Paleocene-Eocene thermal maximum, Walvis Ridge (ODP Sites 1262, 1263, and 1266): Evidence from Mn and U enrichment factors. Paleoceanography, doi:10.1029/2009PA001861.
  • Clementz MT, Fox-Dobbs K, Wheatley PV, Koch PL, Doak DF (2009) Revisiting old bones: coupled carbon isotope analysis of bioapatite and collagen as an ecological and paleoecologcial tool. Geological Journal 44: 605-620
  • Clyde WC, Ting S, Snell KE, Bowen GJ, Tong Y, Koch PL, Li Q, Wang Y-Q (2010) New Paleomagnetic and stable-isotope results from the Nanxiong Basin, China: Implications for the K/T Boundary and the timing of Paleocene mammalian turnover. Journal of Geology 118: 131-143
  • Crowley BE, Carter ML, Karpanty SM, Zihlman AL, Koch PL, Dominy NJ (2010) Stable carbon and nitrogen isotope enrichment in primate tissues, Oecologia 164: 611-626
  • Diefendorf AF, Kevin E. Mueller KE, Wing SL, Koch PL, Freeman KH (2010) Global patterns in leaf 13C discrimination: implications for studies of past and future climate. Proceedings of the National Academy of Sciences of the United States 107: 5738-5743
  • Eder EB, Lewis MN, Campagna C, Koch PL (2010) Evidence of demersal foraging from stable isotope analysis of juvenile elephant seals from Patagonia. Marine Mammal Science 26: 430-443
  • Foley MM, Koch PK (2010) Correlation between allochthonous subsidy input and isotopic variability in the giant kelp Macrocystis pyrifera in central California. Marine Ecology-Progress Series 409: 41-50
  • Ford HL, Schellenberg SA, Becker BJ, Deutschman DL, Dyck KA, Koch PL (2010) Evaluating the skeletal chemistry of Mytilus californianus as a temperature proxy: effects of microenvironment and ontogeny. Paleoceanography 25: PA1203,
  • Galeotti S, S. Krishnan, M. Pagani , L. Lanci, A. Gaudio, J.C. Zachos, S. Monechi, G. Morelli, L. Lourens, 2010, Orbital chronology of Early Eocene hyperthermals from the Contessa Road section, central Italy. Earth & Planetary Science Lett., v. 290, p. 192-200.
  • Graham BS, Koch PL, Newsome SD, McMahon KW, Aurioles D (2010) Using isoscapes to trace the movements and foraging behavior of top predators in oceanic ecosystems. In: West JB, Bowen GJ, Dawson TE, Tu KP (eds) Isoscapes: Understanding Movement, Pattern, and Process on Earth through Isotope Mapping. Springer, pp 299-318
  • Kelly, D.C., T.M.J. Nielsen, H. K. McCarren, J. C. Zachos, and U. Röhl, 2010, Spatiotemporal patterns of carbonate sedimentation in the South Atlantic: Implications for carbon cycling during the Paleocene–Eocene thermal maximum. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 293, p. 30-40.
  • McCarthy, M.D., Beaupre, S., Druffel, E.R.M., Voparil, I., Walker, B., & Guilderson, T. (2010) Chemosynthetic origin of 14C-depleted dissolved organic matter in off-axis crustal fluids Nature Geoscience; (4) 1: 32-36. (DOI 10.1038/NGEO1015)
  • Murphy, B.H., Farley, K.A., Zachos, J.C., 2010, An extraterrestrial 3He-based timescale for the Paleocene-Eocene thermal maximum (PETM) from Walvis Ridge, IODP Site 1266. Geochimica et Cosmochimica Acta, v. 74, p. 5098-5108.
  • Newsome SD, Clementz MT, Koch PL (2010) Using stable isotope biogeochemistry to study marine mammal ecology. Marine Mammal Science 26: 509-572
  • Stap, L. L. J. Lourens, E. Thomas, A. Sluijs, S. Bohaty, and J. C. Zachos, 2010, High-resolution deep-sea carbon and oxygen isotope records of Eocene Thermal Maximum 2 and H2. Geology, v.38; p.607-610.
  • Zachos, J. C., H. McCarren, B. Murphy, U. Röhl, T. Westerhold, 2010, Tempo and Scale of Late Paleocene and Early Eocene Carbon Isotope Cycles: Implications for the Origin of Hyperthermals 2. Earth Planet. Sci. Lett. 299, 242–249.




  • Bijl, P., S. Schouten , H. Brinkhuis , A. Sluijs , G.-J. Reichart , J.C. Zachos, 2009, Palaeogene temperature evolution of the Southwest Pacific Ocean, Nature, Vol 461|8 October 2009| doi:10.1038/nature08399
  • Bohaty, S.M., J. C. Zachos, F. Florindo, & M. L. Delaney, 2009, Coupled Greenhouse Warming and Deep Sea Acidification in the Middle Eocene, Paleoceanography, doi:10.1029/2008PA001676.
  • Clementz MT, Fox-Dobbs K, Wheatley PV, Koch PL, Doak DF (2009) Revisiting old bones: coupled carbon isotope analysis of bioapatite and collagen as an ecological and paleoecologcial tool. Geological Journal 44: 605-620
  • Hollis, C.J., et al., 2009, Tropical sea surface temperatures in the high latitude South-Pacific during the Eocene. Geology. v. 37 Issue: 2, p. 99-102.
  • Koch PL, Fox-Dobbs K, Newsome SD (2009) The isotopic ecology of vertebrates and conservation biology. In: Dietl GP and Flessa KW (eds) Conservation Paleobiology: Using the Past to Manage the Future. Paleontological Society Special Publication 15: 95-112
  • McCarren, H., E. Thomas, T. Hasegawa, U. Röhl, and J.C. Zachos, 2008, Depth dependency of the Paleocene-Eocene carbon isotope excursion: Paired benthic and terrestrial biomarker records (Ocean Drilling Program Leg 208, Walvis Ridge), Geochem. Geophys. Geosyst., 9, Q10008, doi:10.1029/2008GC002116.
  • Raffi, I., J. Backman, J. C. Zachos, and A. Sluijs, 2009, The Response of Calcareous Nannofossil Assemblages to the Paleocene-Eocene Thermal Maximum at the Walvis Ridge in the South Atlantic. Mar. Micropaleontology, doi:10.1016/j.marmicro.2009.12.005.
  • Sluijs, A., H. Brinkhuis, E. M. Crouch, C. M. John, L. Handley, D. Munsterman, S. M. Bohaty, J. C. Zachos, G.-J. Reichart, S. Schouten, R. D. Pancost, J. S. Sinninghe Damste´, N. L. D. Welters, A.F. Lotter, and G. R. Dickens, 2008, Eustatic variations during the Paleocene-Eocene greenhouse world. Paleoceanography. V. 23, PA4216, doi:10.1029/2008PA001615.
  • Westerhold, T.,, U. Röhl, H. K. McCarren, J. C. Zachos, 2009, Latest on the absolute age of the Paleocene–Eocene Thermal Maximum (PETM): New insights from exact stratigraphic position of key ash layers +19 and −17. Earth and Planet. Sci. Lett. v.287, p. 412–419.
  • Yeakel JD, Patterson BD, Fox-Dobbs K, Okumura MM, Cerling TE, Moore JW, Koch PL, Dominy NJ (2009) Cooperation and individuality among man-eating lions. Proceedings of the National Academy of Sciences of the United States 106: 19040-19043 (cover)
  • Zeebe, R.E., J.C. Zachos & G.R. Dickens, 2009, Carbon dioxide forcing alone insufficient to explain Palaeocene–Eocene Thermal Maximum warming. Nature, doi:10.1038/ngeo578.
  • Clementz, M.T., Holroyd, P.L., and Koch, P.L., 2008, Identifying aquatic habits in herbivorous mammals through stable isotope analysis: Palaios.
  • Zeebe, R.E., J. C. Zachos, K. Caldeira, T. Tyrrell, 2008, Carbon Emissions and Acidification. Science, 321, p.51-52, DOI: 10.1126/science.1159124.

  • 2008


    • Clementz, M.T., Holroyd, P.L., and Koch, P.L., 2008, Identifying aquatic habits in herbivorous mammals through stable isotope analysis: Palaios.
    • Crowley, B.E., Koch, P.L., and Davis, E.B., 2008, Stable isotope constraints on the elevation history of the Sierra Nevada Mountains, California: Geological Society of America Bulletin.
    • Fox-Dobbs, K., Leonard, J.A., and Koch, P.L., 2008, Pleistocene megafauna from eastern Beringia: paleoecologic and paleoenvironmental interpretations of stable carbon and nitrogen isotope and radiocarbon records: Palaeogeography Palaeoclimatology Palaeoecology.
    • Griffith, E.M., Paytan, A., Kozdan, R., Eisenhauer, A., and Ravelo, A.C., 2008, in press, Influences on the fractionation of calcium isotopes in planktonic foramininfera: Earth and Planetary Sciences Letters.
    • John, C.M., Bohaty, S.M., Zachos, J.C., Sluijs, A., Gibbs, S., Brinkhuis, H., and Bralower, T.J., In press, Nearshore records of the Paleocene-Eocene thermal maximum;Implications forglobal carbon cycling. Paleoceanography
    • Lyle, M., Barron, J., Bralower, T.J., Huber, M., Lyle, A.O., Ravelo, A.C., Rea, D.K., and Wilson, P.A., 2008, in press, The Pacific Ocean and the Cenozoic Evolution of Earth Systems: Reviews of Geophysics.
    • Zachos, J.C., Dickens, G.R., and Zeebe, R.E., 2008, An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics. Nature. |Vol 451|17 January 2008|doi:10.1038/nature.




    • Bump, J.K., Fox-Dobbs, K., Bada, J.L., Koch, P.L., Peterson, R.O., and Vucetich, J.A., 2007, Stable isotopes, ecological integration and environmental change: wolves record atmospheric carbon isotope trend better than tree rings: Proceedings Of The Royal Society B-Biological Sciences, v. 274, p. 2471-2480.
    • Clementz, M.T., Koch, P.L., and Beck, C.A., 2007, Diet induced differences in carbon isotope fractionation between sirenians and terrestrial ungulates: Marine Biology, v. 151, p. 1773-1784.
    • Dekens, P.S., Ravelo, A.C., and McCarthy, M., 2007, Warm upwelling regions in the warm Pliocene: Paleoceanography, v. 22, p. doi:10.1029/2006PA001394.
    • Fox-Dobbs, K., Bump, J.K., Peterson, R.O., Fox, D.L., and Koch, P.L., 2007, Carnivore-specific stable isotope variables and variation in the foraging ecology of modern and ancient wolf populations: case studies from Isle Royale, Minnesota, and La Brea: Canadian Journal Of Zoology-Revue Canadienne De Zoologie, v. 85, p. 458-471.
    • Hodell, D.A., Kamenov, G.D., Ed, C.H.D.O.E.S.O.U., Zachos, J.C., Rohl, U., and Westerhold, T., 2007, Variations in the strontium isotope composition of seawater during the Paleocene and early Eocene from ODP Leg 208 (Walvis Ridge): Geochemistry Geophysics Geosystems, v. 8, p. -.
    • Jansen, E., J. Overpeck, et al., 2007: Palaeoclimate. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA
    • Koch, P.L., 2007, Isotopic study of the biology of modern and fossil vertebrates, in Michener, R.H., and Lajtha, K., eds., Stable Isotopes in Ecology and Environmental Research: Boston, Blackwell Publishing, p. 99-154.
    • Lawrence, K., Herbert, T.D., Dekens, P., and Ravelo, A.C., 2007, The Application of the Alkenone Organic Proxy to the Study of Plio-Pleistocene Climate, in Williams, M., Haywood, A.M., Gregory, J., and Schmidt, D.N., eds., Deep-time perspectives on climate change: marrying the signal from computer models and biological proxies, Volume The Micropaleontological Society, Special Publications: London, The Geological Society, p. 539-562.
    • Leonard, J.A., Vila, C., Fox-Dobbs, K., Koch, P.L., Wayne, R.K., and Van Valkenburgh, B., 2007, Megafaunal extinctions and the disappearance of a specialized wolf ecomorph: Current Biology, v. 17, p. 1146-1150.
    • Lippert, P.C., and Zachos, J.C., 2007, A biogenic origin for anomalous fine-grained magnetic material at the Paleocene-Eocene boundary at Wilson Lake, New Jersey: Paleoceanography, v. 22, p. -.
    • Newsome, S.D., Etnier, M.A., Gifford-Gonzalez, D., Phillips, D.L., van Tuinen, M., Hadly, E.A., Costa, D.P., Kennett, D.J., Guilderson, T.P., and Koch, P.L., 2007a, The shifting baseline of northern fur seal ecology in the northeast Pacific Ocean: Proceedings Of The National Academy Of Sciences Of The United States Of America, v. 104, p. 9709-9714.
    • Newsome, S.D., Etnier, M.A., Kurle, C.M., Waldbauer, J.R., Chamberlain, C.P., and Koch, P.L., 2007b, Historic decline in primary productivity in western Gulf of Alaska and eastern Bering Sea: isotopic analysis of northern fur seal teeth: Marine Ecology-Progress Series, v. 332, p. 211-224.
    • Nicolo, M.J., Dickens, G.R., Hollis, C.J., and Zachos, J.C., 2007, Multiple early Eocene hyperthermals: Their sedimentary expression on the New Zealand continental margin and in the deep sea: Geology, v. 35, p. 699-702.
    • Ravelo, A.C., Billups, K., Dekens, P., Herbert, T.D., and Lawrence, K., 2007, Onto the Ice Ages:  Proxy Evidence for the onset of Northern Hemisphere Glaciation, in Williams, M., Haywood, A.M., Gregory, J., and Schmidt, D.N., eds., Deep-time perspectives on climate change: marrying the signal from computer models and biological proxies, Volume The Micropaleontological Society, Special Publications: London, The Geological Society, p. 563-573.
    • Ravelo, A.C., and Hillaire-Marcel, C., 2007, The use of oxygen and carbon isotopes of foramininfera in studies of paleoceangraphy, in Hillaire-Marcel, C., and de Vernal, A., eds., Proxies in late Cenozoic Paleoceanography: Amsterdam, The Netherlands, Elsevier, p. 735-764.
    • Rohl, U., Westerhold, T., Bralower, T.J., and Zachos, J.C., 2007, On the duration of the Paleocene-Eocene thermal maximum (PETM): Geochemistry Geophysics Geosystems, v. 8, p. -.
    • Sluijs, A., Brinkhuis, H., Schouten, S., Bohaty, S.M., John, C.M., Zachos, J.C., Reichart, G.J., Damste, J.S.S., Crouch, E.M., and Dickens, G.R., 2007, Environmental precursors to rapid light carbon injection at the Palaeocene/Eocene boundary: Nature, v. 450, p. 1218-U5.
    • Westerhold, T., Rohl, U., Laskar, J., Raffi, I., Bowles, J., Lourens, L.J., and Zachos, J.C., 2007, On the duration of magnetochrons C24r and C25n and the timing of early Eocene global warming events: Implications from the Ocean Drilling Program Leg 208 Walvis Ridge depth transect: Paleoceanography, v. 22, p. -.
    • Yeakel, J.D., Bennett, N.C., Koch, P.L., and Dominy, N.J., 2007, The isotopic ecology of African mole rats informs hypotheses on the evolution of human diet: Proceedings Of The Royal Society B-Biological Sciences, v. 274, p. 1723-1730.
    • Zachos, J.C., Bohaty, S.M., John, C.M., McCarren, H., Kelly, D.C., and Nielsen, T., 2007a, The Palaeocene-Eocene carbon isotope excursion: constraints from individual shell planktonic foraminifer records: Philosophical Transactions of the Royal Society a-Mathematical Physical and Engineering Sciences, v. 365, p. 1829-1842.
    • Zachos, J.C., McCarren, H., Bohaty, S., John, C., Sluijs, A., Brinkhuis, H., Sloan, L.C., Damste, J.S., and Schouten, S., 2007b, The magnitude of ocean warming during the PETM: Implications for forcing and climate sensitivity: Geochimica Et Cosmochimica Acta, v. 71, p. A1150-A1150.
    • Zeebe, R.E., and Zachos, J.C., 2007, Reversed deep-sea carbonate ion basin gradient during Paleocene-Eocene thermal maximum: Paleoceanography, v. 22,




    • Aurioles, D., Koch, P.L., and Le Boeuf, B.J., 2006, Differences in foraging location of Mexican and California elephant seals: Evidence from stable isotopes in pups: Marine Mammal Science, v. 22, p. 326-338.
    • Clementz, M.T., Goswami, A., Gingerich, P.D., and Koch, P.L., 2006, Isotopic records from early whales and sea cows: Contrasting patterns of ecological transition: Journal Of Vertebrate Paleontology, v. 26, p. 355-370.
    • Colosimo, A.B., T.J.Bralower,, and J.C. Zachos, 2006. Evidence for lysocline shoaling at the Paleocene/Eocene Thermal Maximum on Shatsky Rise, northwest Pacific. In Bralower, T.J., Premoli Silva, I., and Malone, M.J. (Eds.), Proc. ODP, Sci. Results, 198, 1–36 [Online]. Available from World Wide Web: http://www-odp.tamu.edu/publications/198_SR/VOLUME/CHAPTERS/112.PDF
    • Coxall, H.K., D'Hondt, S., and Zachos, J.C., 2006, Pelagic evolution and environmental recovery after the Cretaceous-Paleogene mass extinction: Geology, v. 34, p. 297-300.
    • Fedorov, A.V., Dekens, P.S., McCarthy, M., Ravelo, A.C., deMenocal, P.B., Barreiro, M., Pacanowski, R.C., and Philander, S.G., 2006, The Pliocene Paradox (Mechanisms for a Permanent El Nino): Science  10.1126/science.1122666, v. 312, p. 1485-1489.
    • Fox-Dobbs, K., Stidham, T.A., Bowen, G.J., Emslie, S.D., and Koch, P.L., 2006, Dietary controls on extinction versus survival among avian megafauna in the late Pleistocene: Geology, v. 34, p. 685-688.
    • Gibbs, S.J., Bralower, T.J., Bown, P.R., Zachos, J.C., and Bybell, L.M., 2006, Shelf and open-ocean calcareous phytoplankton assemblages across the Paleocene-Eocene Thermal Maximum: Implications for global productivity gradients: Geology, v. 34, p. 233-236.
    • Hoppe, K.A., and Koch, P.L., 2006, The isotopic biogeochemistry of the Aucilla River proboscideans, in Webb, S.D., ed., First Floridians and Last Mastodons: The Page-Ladson Site on the Aucilla River, Volume 26: Topics in Paleobiology, Springer Verlag, p. 379-401.
    • Kaiho, K., Takeda, K., Petrizzo, M.R., and Zachos, J.C., 2006, Anomalous shifts in tropical Pacific planktonic and benthic foraminiferal test size during the Paleocene-Eocene thermal maximum: Palaeogeography Palaeoclimatology Palaeoecology, v. 237, p. 456-464.
    • Koch, P.L., and Barnosky, A.D., 2006, Late quaternary extinctions: State of the debate: Annual Review Of Ecology Evolution And Systematics, v. 37, p. 215-250.
    • Moss, M.L., Yang, D.Y., Newsome, S.D., Speller, C.F., McKechnie, I., McMillan, A.D., Losey, R.J., and Koch, P.L., 2006, Historical ecology and biogeography of north pacific pinnipeds: isotopes and ancient DNA from three archaeological assemblages: Journal of Island and Coastal Archaeology v. 1, p. 165-190.
    • Newsome, S.D., Koch, P.L., Etnier, M.A., and Aurioles-Gambao, D., 2006, Using carbon and nitrogen isotope values to investigate maternal strategies in northeast Pacific otariids: Marine Mammal Science, v. 22, p. 556-572.
    • Pagani, M., Caldeira, K., Archer, D., and Zachos, J.C., 2006, An ancient carbon mystery: Science, v. 314, p. 1556-1557.
    • Palike, H., Frazier, J., and Zachos, J.C., 2006, Extended orbitally forced palaeoclimatic records from the equatorial Atlantic Ceara Rise: Quaternary Science Reviews, v. 25, p. 3138-3149.
    • Ravelo, A.C., Dekens, P.S., and McCarthy, M., 2006, Evidence for El Nino-like conditions during the Pliocene: GSA Today, v. 16, p. 4-11.
    • Zachos, J.C., Schouten, S., Bohaty, S., Quattlebaum, T., Sluijs, A., Brinkhuis, H., Gibbs, S.J., and Bralower, T.J., 2006, Extreme warming of mid-latitude coastal ocean during the Paleocene-Eocene Thermal Maximum: Inferences from TEX86 and isotope data: Geology, v. 34, p. 737-740.



    • Bowen, G.J., Koch, P.L., Meng, J., Ye, J., and Ting, S.Y., 2005, Age and correlation of fossiliferous late Paleocene-early eocene strata of the Erlian basin, Inner Mongolia, China: American Museum Novitates, p. 1-26.
    • Chamberlain, C.P., Waldbauer, J.R., Fox-Dobbs, K., Newsome, S.D., Koch, P.L., Smith, D.R., Church, M.E., Chamberlain, S.D., Sorenson, K.J., and Risebrough, R., 2005, Pleistocene to recent dietary shifts in California condors: Proceedings Of The National Academy Of Sciences Of The United States Of America, v. 102, p. 16707-16711.
    • Haywood, A.M., Dekens, P., Ravelo, A.C., and Williams, M., 2005, Warmer tropics during the mid-Pliocene? Evidence from alkenone paleothermometry and a fully coupled ocean-atmosphere GCM: Geochemistry Geophysics Geosystems, v. 6.
    • Hedges, R.E.M., Stevens, R.E., and Koch, P.L., 2005, Isotopes in bones, in Leng, M.J., ed., Isotopes in paleoenvironmental research. Volume 10 Developments in paleoenvironmental research: Dordrecht, Netherlands, Springer Verlag, p. 117-145.
    • Kelly, D.C., Zachos, J.C., Bralower, T.J., and Schellenberg, S.A., 2005, Enhanced terrestrial weathering/runoff and surface ocean carbonate production during the recovery stages of the Paleocene-Eocene thermal maximum: Paleoceanography, v. 20, p. -.
    • Lourens, L.J., Sluijs, A., Kroon, D., Zachos, J.C., Thomas, E., Rohl, U., Bowles, J., and Raffi, I., 2005, Astronomical pacing of late Palaeocene to early Eocene global warming events: Nature, v. 435, p. 1083-1087.
    • Pagani, M., J. C. Zachos, K. H. Freeman, B. Tipple, S. Bohaty, 2005. Marked decline in atmospheric carbon dioxide concentrations during the Paleogene. Science, v. 308, p. 600-603.
    • Van Simaeys, S., H. Brinkhuis, J. Pross, G. L. Williams, J. C. Zachos, 2005, Arctic dinoflagellate migration marks the strongest Oligocene Glaciations, Geology, v.33, p.709-712.
    • Wara, M.W., Ravelo, A.C., and Delaney, M.L., 2005, Permanent El Nino-Like Conditions During the Pliocene Warm Period: Science, v. 309, p. 758-761.
    • Westerhold, T., Röhl, U., Laskar, J., Raffi, I., Bowles, J., Lourens, L.J., and Zachos, J.C., 2005, New high-resolution chronology from the first complete late Paleocene – early Eocene marine records from Walvis Ridge: duration of Chron 24r and new constraints on the timing of early Eocene global warming events, Geologic Society of America Ann. Meeting: Salt Lake City.
    • Zachos, J. C. and L.R. Kump, 2005. Carbon cycle feedbacks and the initiation of Antarctic glaciation in the earliest Oligocene. Global and Planetary Change, v.47, p. 51-66.
    • Zachos, J. C., U. Röhl, S. A.Schellenberg, A. Sluijs, D. A. Hodell, D. C. Kelly, E. Thomas, M. Nicolo, I. Raffi, L. J. Lourens, H. McCarren, D. Kroon, 2005, Rapid Acidification of the Ocean During the Paleocene-Eocene Thermal Maximum. Science, v.308, p.1611-1615. [Full Text] 




    • Barnosky, A.D., Koch, P.L., Feranec, R.S., Wing, S.L., and Shabel, A.B., 2004, Assessing the causes of Late Pleistocene extinctions on the continents: Science, v. 306, p. 70-75.
    • Billups K., H. Palike, J.E.T. Channell, J.C. Zachos, N.J. Shackleton,  2004. Astronomic calibration of the late Oligocene through early Miocene geomagnetic polarity time scale. Earth and Planetary Science Letters, v. 224 (1-2): 33-44.
    • Bowen, G.J., Beerling, D.J., Koch, P.L., Zachos, J.C., and Quattlebaum, T., 2004, A humid climate state during the Palaeocene/Eocene thermal maximum: Nature, v. 432, p. 495-499.
    • Fox, D.L., and Koch, P.L., 2004, Carbon and oxygen isotopic variability in Neogene paleosol carbonates: constraints on the evolution of the C-4-grasslands of the Great Plains, USA: Palaeogeography Palaeoclimatology Palaeoecology, v. 207, p. 305-329.
    • Gifford-Gonzalez, D., Newsome, S.D., Koch, P.L., Guilderson, T.P., Snodgrass, J.J., and Burton, R.K., 2004, Archaeofaunal insights on pinniped-human interactions in the northeastern Pacific, in Monks, G., ed., The Exploitation and Cultural Importance of Marine Mammals, 9th ICAZ Conference, Durham, 2002, .
    • Harrington, G.J., Kemp, S.J., and Koch, P.L., 2004, Palaeocene-Eocene paratropical floral change in North America: responses to climate change and plant immigration: Journal Of The Geological Society, v. 161, p. 173-184.
    • Hoppe, K.A., 2004, Late Pleistocene mammoth herd structure, migration patterns, and Clovis hunting strategies inferred from isotopic analyses of multiple death assemblages: Paleobiology, v. 30, p. 129-145.
    • Koch, P.L., Diffenbaugh, N.S., and Hoppe, K.A., 2004, The effects of late Quaternary climate and pCO(2) change on C-4 plant abundance in the south-central United States: Palaeogeography Palaeoclimatology Palaeoecology, v. 207, p. 331-357.
    • Newsome, S.D., Phillips, D.L., Culleton, B.J., Guilderson, T.P., and Koch, P.L., 2004, Dietary reconstruction of an early to middle Holocene human population from the central California coast: insights from advanced stable isotope mixing models: Journal Of Archaeological Science, v. 31, p. 1101-1115.
    • Rahmstorf, S., D. Archer, D.S. Ebel, O. Eugster, J. Jouzel, D. Maraun, U. Neu, G.A. Schmidt, J. Severinghaus, A.J. Weaver, and J. Zachos, 2004, Cosmic rays, carbon dioxide, and climate: Eos (Transactions, American Geophysical Union), v. 85, p. 38, 41
    • Ravelo, A.C., and Wara, M.W., 2004, The role of the tropical oceans on global climate during a warm period and a major climate transition: Oceanography, v. 17, p. 22-31.
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    • Ting, S.-Y., Wang, Y.-Q., Schiebout, J.A., Koch, P.L., Clyde, W.C., Bowen, G.J., and Wang, Y., 2004, New Early Eocene Mammalian Fossils from the Hengyang Basin, Hunan, China: Bulletin of Carnegie Museum of Natural History, v. 36, p. 291-301.
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    • Bains, S., Norris, R.D., Corfield, R.M., Bowen, G.J., Gingerich, P.D., and Koch, P.L., 2003, Marine-terrestrial linkages at the Paleocene-Eocene boundary, in Wing, S.L., Gingerich, P.D., Schmitz, B., and Thomas, E., eds., Causes and Consequences of Globally Warm Climates in the Early Paleogene, Volume 369: Geological Society of America Special Paper: Boulder, Colorado, p. 1-9.
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    • Clementz, M.T., Hoppe, K.A., and Koch, P.L., 2003, A paleoecological paradox: the habitat and dietary preferences of the extinct tethythere Desmostylus, inferred from stable isotope analysis: Paleobiology, v. 29, p. 506-519.
    • De Romero L.M., I.M. Truskowski, T.J. Bralower, J.A. Bergen, O. Odreman. J.C. Zachos, and F.A. Galea-Alvarez, 2003, An integrated calcareous microfossil biostratigraphic and carbon-isotope stratigraphic framework for the La Luna Formation, western Venezuela. Palaios, v. 18, p. 349-366 .
    • Diester-Haass, L. and J. Zachos, 2003, The Eocene-Oligocene transition in the Equatorial Atlantic (ODP Site 925); paleoproductivity increase and positive d13C excursion. In Prothero, D.R; Ivany, L. C; Nesbitt, E. A. From greenhouse to icehouse; the marine Eocene-Oligocene transition, Columbia University Press, New York, NY, United States (USA).
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    • Kelly, D.C., Norris, R.D., and Zachos, J.C., 2003, Deciphering the paleoceanographic significance of Early Oligocene Braarudosphaera chalks in the South Atlantic: Marine Micropaleontology, v. 49, p. 49-63.
    • Koch, P.L., Clyde, W.C., Hepple, R.P., Fogel, M.L., Wing, S.L., and Zachos, J.C. 2003. Isotopic records of carbon cycle and climate change across the Paleocene-Eocene boundary from the Bighorn Basin, Wyoming. In Causes and Consequences of Globally Warm Climates in the Early Paleogene (S.L. Wing, P.D. Gingerich, B. Schmitz, and E. Thomas, eds.), Boulder, Colorado. Geological Society of America Special Paper 369: 49-64.
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    • Ravizza, G. E., J. C. Zachos, 2003. Records of Cenozoic Ocean Chemistry. In H.D. Holland, K.K. Turekian (eds).  Treatise on Geochemistry: The Oceans and Marine Geochemistry, v. 6, Elsevier, p. 551-582
    • Ting, S.-Y., Bowen, G.J., Koch, P.L., Clyde, W.C., Wang, Y.-Q., Wang, Y., and McKenna, M.C., 2003, Biostratigraphic, chemostratigraphic, and magnetostratigraphic study across the Paleocene/Eocene boundary in the Hengyang Basin, Hunan, China, in Wing, S.L., Gingerich, P.D., Schmitz, B., and Thomas, E., eds., Causes and Consequences of Globally Warm Climates in the Early Paleogene, Volume 369: Geological Society of America Special Paper: Boulder, Colorado, p. 521-535.
    • Tripati, A. K., M. L. Delaney, J. C. Zachos, L. D.  Anderson,  D. C. Kelly, and H. Elderfield, 2003, Tropical sea-surface temperature reconstruction for the early Paleogene using Mg/Ca ratios of planktonic foraminifera. Paleoceanography, v. 18, 1101.
    • Wara, M.W., Anderson, L.D., Schellenberg, S.A., Franks, R., Ravelo, A.C., and Delaney, M.L., 2003a, Application of a radially viewed inductively coupled plasma-optical emission spectrophotometer to simultaneous measurement of Mg/Ca, Sr/Ca, and Mn/Ca ratios in marine biogenic carbonates: Geochemistry Geophysics Geosystems, v. 4.
    • Wara, M.W., Delaney, M.L., Bullen, T.D., and Ravelo, A.C., 2003b, Possible roles of pH, temperature, and partial dissolution in determining boron concentration and isotopic composition in planktonic foraminifera: Paleoceanography, v. 18.
    • Wing, S.L., Harrington, G.J., Bowen, G.J., and Koch, P.L. 2003. Floral change during the Paleocene/Eocene Thermal Maximum in the Powder River Basin, Wyoming. In Causes and Consequences of Globally Warm Climates in the Early Paleogene (S.L. Wing, P.D. Gingerich, B. Schmitz, and E. Thomas, eds.), Boulder, Colorado. Geological Society of America Special Paper 369: 425-440.
    • Zachos, J.C., Wara, M.W., Bohaty, S., Delaney, M.L., Petrizzo, M.R., Brill, A., Bralower, T.J., and Premoli-Silva, I., 2003, A transient rise in tropical sea surface temperature during the Paleocene-Eocene Thermal Maximum: Science, v. 302, p. 1551-1554.


    • Bowen, G.J., Clyde, W.C., Koch, P.L., Ting, S., Alroy, J., Tsubamoto, T., Wang, Yuanqing, and Wang Yuan, 2002. Temporally constrained patterns of mammalian dispersal at the Paleocene/Eocene boundary. Science 295: 2062-2065.
    • Morrill, C., and Koch, P.L., 2002. Elevation or alteration? Evaluation of isotopic constraints on paleoaltitudes surrounding the Eocene Green River Basin. Geology 30: 151-154.
    • Billups, K., Channell, J.E.T., and Zachos, J., 2002, Late Oligocene to early Miocene geochronology and paleoceanography from the subantarctic South Atlantic: Paleoceanography, v. 17, p. U39-U49.
    • Herbert, T.D., Schuffert, J.D., Andreasen, D., Heusser, L., Lyle, M., Mix, A., Ravelo, A.C., Stott, L.D., and Heguera, J.C., 2002, The California Current, devils hole, and Pleistocene climate - Response: Science, v. 296.
    • Kelly, D.C., R.D. Norris, J. C. Zachos, 2003,  Deciphering the paleoceanographic significance of Early Oligocene Braarudosphaera chalks in the South Atlantic. Mar Micropaleontol., v 49, p. 49-63Stakes, D. S., A. M. Trehu, S. K. Goffredi, T. H. Naehr, and R. A. Duncan, 2002, Mass wasting, methane venting, and biological communities on the Mendocino transform fault, Geology, 30, 407-410
    • Thomas, D.J., Zachos, J.C., Bralower, T.J., Thomas, E., and Bohaty, S., 2002, Warming the fuel for the fire: Evidence for the thermal dissociation of methane hydrate during the Paleocene-Eocene thermal maximum: Geology, v. 30, p. 1067-1070.
    • Tripati, A., and Zachos, J., 2002, Late Eocene tropical sea surface temperatures: A perspective from Panama - art. no. 1032: Paleoceanography, v. 17, p. 1032.
    • Zachos, J.C., Arthur, M.A., Bralower, T.J., and Spero, H.J., 2002, Palaeoclimatology - Tropical temperatures in greenhouse episodes: Nature, v. 419, p. 897-898.


    • Bowen, G.J., Koch, P.L., Gingerich, P.D., Norris, R.D., Corfield, R.M., and Bains, S. 2001. High-resolution isotope stratigraphy across the Paleocene-Eocene Boundary at Polecat Bench, WY. University of Michigan, Papers on Paleontology 32: 73-88.
    • Burton, R.F., Snodgrass, J.J., Gifford-Gonzalez, D., Guilderson, T.P., Brown, T., and Koch, P.L. 2001. Holocene changes in the ecology of northern fur seals: Insights from stable isotopes and archaeofauna. Oecologia 128: 107-115.
    • Clementz, M., and Koch, P.L. 2001. Monitoring habitat and foraging ecology in aquatic mammal with stable isotopes in the tooth enamel. Oecologia 129: 461-472.
    • Clyde, W.C., Sheldon, N.D., Koch, P.L., Gunnell, G.F., and Bartels, W.S. 2001. Linking the Wasatchian/Bridgerian boundary to the Cenozoic Global Climate Optimum: New magnetostratigraphic and isotopic results from South Pass, Wyoming. Palaeogeography, Palaeoclimatology, Palaeoecology 167: 175-199.
    • Koch, P.L., Behrensmeyer, A.K., Stott, A.W., Tuross, N., Evershed, R.P., and Fogel, M.L. 2001. The effects of weathering on the stable isotope composition of bones. Ancient Biomolecules 3: 117-134.
    • Royer, D.L., Wing, S.L., Beerling, D.J., Jolley, D.W., Koch, P.L, Hickey, L.J., Berner, R.A. 2001. Paleobotanical evidence for near present day levels of atmospheric CO2 during part of the Tertiary. Science 292: 2310-2313.
    • Andreasen, D.H., Ravelo, A.C., and Broccoli, A.J., 2001, Remote forcing at the last glacial maximum in the tropical Pacific Ocean: Journal Of Geophysical Research-Oceans, v. 106, p. 879-897.
    • Haug, G.H., Tiedemann, R., Zahn, R., and Ravelo, A.C., 2001, Role of Panama uplift on oceanic freshwater balance: Geology, v. 29, p. 207-210.
    • Herbert, T.D., Schuffert, J.D., Andreasen, D., Heusser, L., Lyle, M., Mix, A., Ravelo, A.C., Stott, L.D., and Herguera, J.C., 2001, Collapse of the California Current during glacial maxima linked to climate change on land: Science, v. 293, p. 71-76.
    • Kelly, D.C., Bralower, T.J., and Zachos, J.C., 2001, On the demise of the early paleogene Morozovella velascoensis lineage: Terminal progenesis in the planktonic foraminifera: Palaios, v. 16, p. 507-523.
    • Mc Intyre, K., Delaney, M.L., and Ravelo, A.C., 2001, Millennial-scale climate change and oceanic processes in the late Pliocene and early Pleistocene: Paleoceanography, v. 16, p. 535-543.
    • Tripati, A., Zachos, J., Marincovich, L., and Bice, K., 2001, Late Paleocene Arctic coastal climate inferred from molluscan stable and radiogenic isotope ratios: Palaeogeography Palaeoclimatology Palaeoecology, v. 170, p. 101-113.
    • Zachos, J., Pagani, M., Sloan, L., Thomas, E., and Billups, K., 2001a, Trends, rhythms, and aberrations in global climate 65 Ma to present: Science, v. 292, p. 686-693.
    • Zachos, J.C., Shackleton, N.J., Revenaugh, J.S., Palike, H., and Flower, B.P., 2001b, Climate response to orbital forcing across the Oligocene-Miocene boundary: Science, v. 292, p. 274-278.


    • Alroy, J., Koch, P.L., and Zachos, J.C., 2000, Global climate change and North American mammalian evolution: Paleobiology, v. 26, p. 259-288.
    • Chaisson, W., and Ravelo, A.C., 2000, Pliocene development of the East-West hydrographic gradient in the Equatorial Pacific: Paleoceanography, v. 15, p. 497-505.
    • Faul, K.L., Ravelo, A.C., and Delaney, M.L., 2000, Reconstructions of upwelling, productivity, and photic zone depth in the eastern equatorial Pacific Ocean using planktonic foraminiferal stable isotopes and abundances: Journal Of Foraminiferal Research, v. 30, p. 110-125.
    • Gibson, T.G., Bybell, L.M., Thomas, E., and Zachos, J.C., 2000, Kaolinite distribution in Paleocene/Eocene boundary strata of northeastern United States and Pakistan - climatic and stratigraphic implications: Gff, v. 122, p. 56.
    • Halfar, J., Zack, T., Kronz, A., and Zachos, J.C., 2000, Growth and high-resolution paleoenvironmental signals of rhodoliths (coralline red algae): A new biogenic archive: Journal of Geophysical Research-Oceans, v. 105, p. 22107-22116.
    • Kelly, D.C., Bralower, T.J., and Zachos, J.C., 2000, On the demise of the early Paleogene Morozovella velascoensis lineage: Terminal progenesis in the planktic foraminifera?: Gff, v. 122, p. 86-87.
    • Paul, H.A., Zachos, J.C., Flower, B.P., and Tripati, A., 2000, Orbitally induced climate and geochemical variability across the Oligocene/Miocene boundary: Paleoceanography, v. 15, p. 471-485.
    • Ravelo, A.C., and Andreasen, D.H., 2000, Enhanced circulation during a warm period: Geophysical Research Letters, v. 27, p. 1001-1004.
    • Schmitz, B., Aubry, M.P., and Zachos, J., 2000, Early paleogene warm climates and biosphere dynamics - Short papers and extended abstracts from an International Meeting in Goteborg, Sweden, June 9-23, 1999 - Preface & summary: Gff, v. 122, p. 4-6.
    • Shackleton, N.J., Hall, M.A., Raffi, I., Tauxe, L., and Zachos, J., 2000, Astronomical calibration age for the Oligocene-Miocene boundary: Geology, v. 28, p. 447-450.
    • Thomas, D.J., Bralower, T.J., and Zachos, J.C., 2000a, Evidence for subtropical warming during the late Paleocene thermal maximum - New insights from DSDP Site 527: Gff, v. 122, p. 168-168.
    • Thomas, E., and Zachos, J.C., 2000, Was the late Paleocene thermal maximum a unique event?: Gff, v. 122, p. 169-170.
    • Thomas, E., Zachos, J.C., and Bralower, T.J., 2000b, Deep-sea environments on a warm earth; latest Paleocene-early Eocene, in MacLeod, K.G.e., and Wing, S.L.e., eds., Warm climates in Earth history.
    • Tripati, A., and Zachos, J.C., 2000, Paleocene and Eocene coastal ocean temperatures: Gff, v. 122, p. 171-172.
    • Wara, M.W., Ravelo, A.C., and Revenaugh, J.S., 2000, The Pacemaker always rings twice: Paleoceanography, v. 15, p. 616-624.
    • Zachos, J.C., and Dickens, G.R., 2000, An assessment of the biogeochemical feedback response to the climatic and chemical perturbations of the LPTM: Gff, v. 122, p. 188-189.
    • Thomas, E., T. Gapotchenko, J. C. Varekamp, E. L. Mecray, and M. R. B. ten Brink, Benthic foraminifera and environmental changes in Long Island Sound, Journal of Coastal Research, 16, 641-655, 2000.
    • Saltzman, M. R., R. L. Ripperdan, M. D. Brasier, K. C. Lohmann, R. A. Robison, W. T. Chang, S. C. Peng, E. K. Ergaliev, and B. Runnegar, A global carbon isotope excursion (SPICE) during the Late Cambrian: relation to trilobite extinctions, organic-matter burial and sea level, Palaeogeography Palaeoclimatology Palaeoecology, 162, 211-223, 2000.


    • Billups, K., Ravelo, A.C., Zachos, J.C., and Norris, R.D., 1999, Link between oceanic heat transport, thermohaline circulation, and the Intertropical Convergence Zone in the early Pliocene Atlantic: Geology, v. 27, p. 319-322.
    • Kwiek, P.B., and Ravelo, A.C., 1999, Pacific Ocean intermediate and deep water circulation during the Pliocene: Palaeogeography Palaeoclimatology Palaeoecology, v. 154, p. 191-217.
    • Martin, E.E., Shackleton, N.J., Zachos, J.C., and Flower, B.P., 1999, Orbitally-tuned Sr isotope chemostratigraphy for the late middle to late Miocene: Paleoceanography, v. 14, p. 74-83.
    • Mc Intyre, K., Ravelo, A.C., and Delaney, M.L., 1999, North Atlantic intermediate waters in the late Pliocene to early Pleistocene: Paleoceanography, v. 14, p. 324-335.
    • Salamy, K.A., and Zachos, J.C., 1999, Latest Eocene Early Oligocene climate change and Southern Ocean fertility: inferences from sediment accumulation and stable isotope data: Palaeogeography Palaeoclimatology Palaeoecology, v. 145, p. 61-77.
    • Thomas, D.J., Bralower, T.J., and Zachos, J.C., 1999, New evidence for subtropical warming during the late Paleocene thermal maximum: Stable isotopes from Deep Sea Drilling Project Site 527, Walvis Ridge: Paleoceanography, v. 14, p. 561-570.
    • Zachos, J.C., Opdyke, B.N., Quinn, T.M., Jones, C.E., and Halliday, A.N., 1999, Early cenozoic glaciation, antarctic weathering, and seawater Sr-87/Sr-86: is there a link?: Chemical Geology, v. 161, p. 165-180.
    • Burton, R.K., and Koch, P.L. 1999. Isotopic tracking of foraging and long distance migration in northeastern Pacific pinnipeds. Oecologia 119: 578-585.
    • Hoppe, K.A., Koch, P.L., Carlson, R., and Webb, S.D. 1999. Tracking mammoths and mastodons: reconstruction of migratory behavior using strontium isotopes. Geology 27: 439-442.
    • Crowley, T., and J.C. Zachos, 1999, Comparison of Zonal Temperature Profiles For Past Warm Time Periods.  in Warm Climates in Earth History, B.T. Huber, K.G. MacLeod, S.L. Wing (Eds.), Cambridge Univ. Press, p. 50-76.
    • Thomas, E. , J.C. Zachos , and T. J. Bralower, 1999, Deep-Sea Environments in the Absence of Polar Ice Caps: The Case of The Early Eocene.  in Warm Climates in Earth History, B.T. Huber, K.G. MacLeod, S.L. Wing (Eds.), Cambridge Univ. Press, p.132-160.
    • Gupta, A. K., and E. Thomas, 1999, Latest Miocene-Pleistocene productivity and deep-sea ventilation in the northwestern Indian ocean (Deep Sea Drilling Project Site 219), Paleoceanography, 14, 62-73.
    • Stakes, D. S., D. Orange, J. B. Paduan, K. A. Salamy, and N. Maher, 1999, Cold-seeps and authigenic carbonate formation in Monterey Bay, California, Marine Geology, 159, 93-109.


    • Billups, K., Ravelo, A.C., and Zachos, J.C., 1998a, Early Pliocene climate: A perspective from the western equatorial Atlantic warm pool: Paleoceanography, v. 13, p. 459-470.
    • Billups, K., Ravelo, A.C., and Zachos, J.C., 1998b, Early Pliocene deep water circulation in the western equatorial Atlantic: Implications for high-latitude climate change: Paleoceanography, v. 13, p. 84-95.
    • Bralower, T.J., Thomas, D.J., Thomas, E., and Zachos, J.C., 1998, High-resolution records of the late Paleocene thermal maximum and circum-Caribbean volcanism: Is there a causal link? Reply: Geology, v. 26, p. 671-671.
    • D'Hondt, S., Donaghay, P., Zachos, J.C., Luttenberg, D., and Lindinger, M., 1998, Organic carbon fluxes and ecological recovery from the Cretaceous-Tertiary mass extinction: Science, v. 282, p. 276-279.
    • D'Hondt, S., and Zachos, J.C., 1998, Cretaceous foraminifera and the evolutionary history of planktic photosymbiosis: Paleobiology, v. 24, p. 512-523.
    • Kelly, D.C., Bralower, T.J., and Zachos, J.C., 1998, Evolutionary consequences of the latest Paleocene thermal maximum for tropical planktonic foraminifera: Palaeogeography Palaeoclimatology Palaeoecology, v. 141, p. 139-161.
    • Ramsay, A. T. S., C.W. Smart, and  J.C. Zachos, 1998, A model of early to middle Miocene deep ocean circulation for the Atlantic and Indian oceans. In  Geological evolution of ocean basins; results from the Ocean Drilling Program , (eds) Cramp, A., MacLeod, C. J., Lee, S. V., Jones, E. J. W.,  Geological Society Special Publications, v. 131, p. 55-70.
    • Saltzman, M. R., B. Runnegar, and K. C. Lohmann, 1998, Carbon Isotope Stratigraphy of Upper Cambrian (Steptoean Stage) Sequences of the Eastern Great Basin - Record of a Global Oceanographic Event, Geological Society of America Bulletin, 110, 285-297.


    • Andreasen, D.H., and Ravelo, A.C., 1997, Tropical Pacific Ocean Thermocline Depth Reconstructions for the Last Glacial: Paleoceanography, v. 12, p. 395-414.
    • Bralower, T.J., Thomas, D.J., Zachos, J.C., Hirschmann, M.M., Rohl, U., Sigurdsson, H., Thomas, E., and Whitney, D.L., 1997, High-resolution records of the late Paleocene thermal maximum and circum-Caribbean volcanism: Is there a causal link?: Geology, v. 25, p. 963-966.
    • Cannariato, K.G., and Ravelo, A.C., 1997, Pliocene-Pleistocene evolution of eastern tropical Pacific surface water circulation and thermocline depth: Paleoceanography, v. 12, p. 805-820.
    • Chaisson, W.P., and Ravelo, A.C., 1997, Changes in upper water-column structure at Site 925, late Miocene- Pleistocene; planktonic foraminifer assemblages and isotopic evidence: Proc. of the Ocean Drilling Program, Sci. Results, v. 154, p. 255- 268.
    • Flower, B.P., Zachos, J.C., and Martin, E., 1997a, Latest Oligocene through early Miocene isotopic stratigraphy and deep-water paleoceanography of the western equatorial Atlantic: Sites 926 and 929, in Shackleton, N.J., Curry, W.B., and Richter, C., eds., Proc. Ocean Drill. Program Sci.Results, Volume 154: College Station, TX, Ocean Drilling Program, p. 451-461.
    • Flower, B.P., Zachos, J.C., and Paul, H.A., 1997b, Milankovitch-scale climate variability recorded near the Oligocene/Miocene boundary, in Shackleton, N.J., Curry, W.B., and Richter, C., eds., Scientific Results, Volume 154: College Station, TX, Ocean Drill. Program, p. 433-439.
    • McIntyre, K., Ravelo, A.C., Delaney, M.L., Anderson, L.D., and Johannessen, T., 1997, Ground truthing the Cd/Ca-carbon isotope relationship in foraminifera of the Greenland-Iceland-Norwegian Seas: Marine Geology, v. 140, p. 61-73.
    • Ravelo, A.C., Lyle, M., Koizumi, I., Caulet, J.P., Fornaciari, E., Hayashida, A., Heider, F., Hood, J., Hovan, S., Janecek, T., Janik, A., Stax, R., and Yamamoto, M., 1997, Pliocene carbonate accumulation along the California margin: Paleoceanography, v. 12, p. 729-741.
    • Zachos, J.C., Flower, B.P., and Paul, H., 1997, Orbitally paced climate oscillations across the Oligocene/Miocene boundary: Nature, v. 388, p. 567-570.