2010

Lee-Thorp JA, Sponheimer M, Passey BH, de Ruiter DJ, Cerling TE (2010) Stable isotopes in fossil hominin tooth enamel suggest a fundamental dietary shift in the Pliocene.  Philosophical Transactions of the Royal Society B. 365, 3389-3396.

Passey BH, Levin NE, Cerling TE, Brown FH, Eiler JM (2010) High-temperature environments of human evolution in East Africa based on bond ordering in paleosol carbonates.  Proceedings of the National Academy of Sciences, USA. 107, 11245-11249. 030_Passey_etal_2010.pdf

Zazzo A, Balasse M, Passey BH, Moloney AP, Monahan FJ, Schmidt O (2010) The isotope record of short- and long-term dietary changes in sheep tooth enamel: Implications for quantitative reconstructions of paleodiets.  Geochimica et Cosmochimica Acta 74, 3571-3586. 029_Zazzo_etal_2019.pdf

Cerling TE, Harris JM, Leakey MG, Passey BH, Levin NE (2010) Stable carbon and oxygen isotopes in East African mammals: modern and fossil.  In Cenozoic Mammals of Africa, Werdelin L. and Sanders W. eds.  University of California Press, Berkeley.  pp. 941-952.  ISBN 978-0-520-25721-4

2009

Huntington KW, Eiler JM, Affek HP, Guo W, Bonifacie M, Yeung LY, Thiagarajan N, Passey B, Tripati A, Daeron M, Came R (2009) Methods and limitations of 'clumped' CO2 isotope (D47) analysis by gas-source isotope ratio mass spectrometry.  Journal of Mass Spectrometry 44, 1318-1329.  027_Huntington_etal_2009.pdf

Sponheimer M, Codron D, Passey BH, de Ruiter DJ, Cerling TE, Lee-Thorp JA (2009) Using carbon isotopes to track dietary change in modern, historical, and ancient primates.  American Journal of Physical Anthropology 140, 661-670. 026_Sponheimer_etal_2009.pdf

Passey BH, Ayliffe LK, Kaakinen A, Eronen JT, Zhang ZQ, Cerling TE, Fortelius M (2009) Strengthened East Asian summer monsoons during a period of high-latitude warmth?  Isotopic evidence from Mio-Pliocene fossil mammals and soil carbonates from northern China.  Earth and Planetary Science Letters 277, 443-452.  025_Passey_etal_2009.pdf  Passey_2009_Table1.xls Passey_2009_Table2.xls  Passey_2009_Table3.xls

2008

Harris JM, Cerling TE, Leakey MG, Passey BH (2008)  Stable isotope ecology of fossil hippopotamids from the Lake Turkana Basin of East Africa.  Journal of Zoology 275, 323-331. 024_Harris_etal_2008.pdf

Cerling TE, Harris JM, Hart JA, Kaleme P, Klingel H, Leakey MG, Levin NE, Lewison RL, Passey BH (2008)  Stable isotope ecology of the common hippopotamus.  Journal of Zoology 276, 204-212.  023_Cerling_etal_2008.pdf

2007

Podlesak DW, Torregrossa A-M, Ehleringer JR, Dearing MD, Passey BH, Cerling TE (2007) Turnover of oxygen and hydrogen isotopes in the body water, CO2, hair, and enamel of a small mammal.  Geochimica et Cosmochimica Acta 72, 19-35.  022_Podlesaketal2007.pdf

Passey BH, Cerling TE, Levin NE (2007) Temperature dependence of oxygen isotope acid fractionation for modern and fossil tooth enamels.  Rapid Communications in Mass Spectrometry 21, 2853-2859.  021_Passeyetal2007b.pdf

Passey BH, Eronen JT, Fortelius M, Zhang ZQ (2007) Paleoenvironments and paleodiets of late Miocene gazelles from North China: Evidence from stable carbon isotopes.  Vertebrata Palasiatica, 45, 118-127. 020_Passeyetal2007a.pdf

Cerling TE, Ayliffe LK, Dearing MD, Ehleringer JR, Passey BH, Podlesak DW, Torregrossa AM, West AG (2007) Determining biological tissue turnover using stable isotopes: the reaction progress variable. Oecologia 151, 175-189. 019_Cerlingetal2007.pdf  Supplementary Material (excel)                        

2006

Passey BH, and Cerling TE (2006) In situ stable isotope analysis (d13C, d18O) of very small teeth using laser ablation GC/IRMS. Chemical Geology 235, 238-249. 018_Passey&Cerling2006.pdf  data
 

Sponheimer M, Passey BH, de Ruiter DJ, Guatelli-Steinberg D, Cerling TE, Lee-Thorp J (2006) Isotopic evidence for dietary variability in the early hominin Paranthropus robustus. Science 314, 980-982.  017_Sponheimeretal2006.pdf  Perspective (Stan Ambrose)  Supplementary Material
 
Passey BH, Cerling TE, Chan MA (2006) Dam Fun: A scale-model classroom experiment for teaching basic concepts in hydrology and sedimentary geology. Journal of Geoscience Education 54, 487-490.  016_Passeyetal2006.pdf

Levin NE, Cerling TE, Passey BH, Harris JM, Ehleringer JR (2006) A stable isotope aridity index for terrestrial environments. Proceedings of the National Academy of Sciences 103, 11201-11205. 015_Levinetal2006.pdf

Robinson TF, Sponheimer M, Roeder BL, Passey BH, Cerling TE, Dearing MD, and Ehleringer JR (2006) Digestibility and nitrogen retention in llamas and goats fed alfalfa, C3 grass, and C4 grass hays.  Small Ruminant Research 64, 162-168. 014_Robinsonetal2006.pdf

2005

Jokela, T, Eronen, JT, Kaakinen, A, Liu, LP, Passey BH, Zhang, ZQ, and Fu, MK. (2005). Translation of Otto Zdansky’s  “The localities of the Hipparion fauna of Baode County in northwest Shanxi”. Palaeontologia Electronica 8, Issue 1, Art. No. 3A. 013_Jokelaetal2005.pdf

Passey BH, Cerling TE, Schuster GT, Robinson TF, Roeder BL, Krueger SK, (2005) Inverse methods for estimating primary input signals from time-averaged intra-tooth isotope profiles.  Geochimica et Cosmochimica Acta 69, 4101-4116. 012_Passeyetal2005b.pdf  data

Passey BH, Robinson TF, Ayliffe LK, Cerling TE, Sponheimer M, Dearing MD, Roeder BL, Ehleringer JR, (2005) Carbon isotopic fractionation between diet, breath, and bioapatite in different mammals.  Journal of  Archaeological Science 32, 1459-1470. 011_Passeyetal2005a.pdf  data
 

2004

Cerling TE, Passey BH, Ayliffe LK, Cook CS, Ehleringer JR, Harris JM, Dhidha MB, Kasiki SM (2004). Orphans’ tales: seasonal dietary changes in elephants from Tsavo National Park, Kenya.  Palaeogeography, Palaeoclimatology, Palaeoecology 206, 367-376. 010_Cerlingetal2004.pdf

Ayliffe LK, Cerling TE, Robinson T, West AG, Sponheimer M, Passey BH, Hammer J, Roeder B, Dearing MD, and Ehleringer JR (2003) Turnover of carbon isotopes in tail hair and breath CO2 of horses fed an isotopically varied diet.  Oecologia 139, 11-22. 009_Ayliffeetal2004.pdf 

Passey BH and Cerling TE (2004) Response to comment by M.J. Kohn on “Tooth enamel mineralization in ungulates: Implications for recovering a primary isotopic time-series” by B.H. Passey and T.E. Cerling (2002).  Geochimica et Cosmochimica Acta 68, 407-409. 008_PasseyandCerling2004.pdf  Kohn2004comment.pdf
 

2003

Sponheimer M, Robinson TF, Roeder BL, Passey BH, Ayliffe LK, Cerling TE, Dearing MD, Ehleringer JR (2003) An experimental study of nitrogen flux in llamas: is 14N preferentially excreted?  Journal of Archaeological Science 30, 1649-1655. 007_Sponheimeretal2003.pdf

Sponheimer M, Robinson T, Ayliffe L, Roeder B, Hammer J, Passey B, West A, Cerling T, Dearing D, Ehleringer J (2003) Nitrogen isotopes in mammalian herbivores: Hair d15N values from a controlled feeding study.  International Journal of Osteoarchaeology 13, 80-87. Sponheimeretal2003.pdf 

Sponheimer M, Robinson T, Ayliffe L, Passey B, Roeder B, Shipley L, Lopez E, Cerling T, Dearing D, Ehleringer J (2003) An experimental study of carbon-isotope fractionation between diet, hair, and feces of mammalian herbivores.  Canadian Journal of Zoology 81, 871-876. 005_Sponheimeretal2003.pdf

Cerling TE, Harris JM, Passey BH, (2003) Diets of east African bovidae based on stable isotope analysis.  Journal of Mammalogy 84, 456-470. 004_Cerlingetal2003.pdf

Sponheimer M, Robinson T, Roeder B, Hammer J, Ayliffe L, Passey B, Cerling T, Dearing D, Ehleringer J (2003) Digestion and passage rates of grass hays by llamas, alpacas, goats, rabbits, and horses.  Small Ruminant Research 48, 149-154. 003_Sponheimeretal2003.pdf

2002

Passey BH and Cerling TE (2002) Tooth enamel mineralization in ungulates: Implications for recovering a primary isotopic time-series:  Geochimica et Cosmochimica Acta 66, 3225-3234. 002_PasseyandCerling2002.pdf 

Passey BH, Cerling TE, Perkins ME, Voorhies MR, Harris JM, and Tucker ST, (2002) Environmental change in the Great Plains: An isotopic record from fossil horses.  Journal of Geology 110, 123-140.
 001_Passeyetal2002.pdf  data