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Susumu Tomiya
Postdoc, Field Museum of Natural History

Susumu Tomiya


His research: "I study the fossil record of North American mammals, to understand how mammalian 'communities' are assembled and how they respond to major environmental changes at the macroevolutionary time scale of millions of years."

Why paleontology? "I love the science of paleontology, partly because of its magical appeal of 'breathing life' into plants and animals that have been dead for millions of years, and because it connects me to the times and places in the Earth's history when and where these plants and animals were thriving. Most importantly, I believe studying the history of life through the fossil record is absolutely essential for us, to understand the dynamics of the biodiversity on our planet that we all marvel at and strive to preserve for the future."


Tomiya, S. 2013. Body size and extinction risk in terrestrial mammals above the species level. American Naturalist. 182:E196-E214.   Read it

Tomiya, S. 2013. New carnivoraforms (Mammalia) from the middle Eocene of California, USA, and comments on the taxonomic status of 'Miacis' gracilis. Palaeontologia Electronica. 16(2; 14A): 1-29.  Read it

2011. Tomiya, S., Swartz, B.A., Batavia, M. Educational values of the University of California Museum of Paleontology. University Museums and Collections Journal 3/2010: 61-66.

Barnosky, A. D., Nicholas Matzke, Susumu Tomiya, Guin Wogan, Brian Swartz, Tiago Quental, Charles Marshall, Jenny L. McGuire, Emily L. Lindsey, Kaitlin C. Maguire, Ben Mersey, Elizabeth A. Ferrer. 2011. Has the Earth's sixth mass extinction already arrived? Nature 471:51-57  Read it

Susumu Tomiya, Jenny L. Mcguire, Russell W. Dedon, Seth D. Lerner, Rika Setsuda, Ashley N. Lipps, Jeannie F. Bailey, Kelly R. Hale, Alan B. Shabel, and Anthony D. Barnosky. 2011. A report on late Quaternary vertebrate fossil assemblages from the eastern San Francisco Bay region, California. PaleoBios 30(2):50-71.

Tomiya, S. 2011. A new basal Caniform (Mammalia: Carnivora) from the middle Eocene of North America and remarks on the phylogeny of early carnivorans. PLoS ONE. 6(9):e24146.   Read it

Tomiya, S., J.L. McGuire, R.W. Dedon, S.D. Lerner, R. Setsuda, A.N. Lipps, J.F. Bailey, K.R. Hale, A.B. Shabel, and A.D. Barnosky. 2011. A report on late Quaternary vertebrate fossil assemblages from the eastern San Francisco Bay region, California. PaleoBios. 30:50-71.

Barnosky, A.D., N. Matzke, S. Tomiya, E. Lindsey, and G. Wogan. 2010. How present extinction rates compare with mass extinction rates: insights from mammals. Journal of Vertebrate Paleontology 30, Society of Vertebrate Paleontology Program and Abstracts, Volume:57A.

McGuire, J., J. Blois, S. Tomiya, B. Sherrod and A. D. Barnosky. 2008. Quantifying the extent of time-averaging introduced by rodent bioturbation in mammal-bearing cenozoic sediments. Journal of Vertebrate Paleontology 28 (Supp. 3):115A.