San Diego Natural History Museum--Your Nature Connection[BRCC San Diego Natural History Museum: Paleontology]

Stephen L. Walsh

Steve Walsh

Stephen L. Walsh (1961-2007) received a B.S. degree in Geology at San Diego State University in 1987, and worked as Field Monitor and Curatorial Assistant in the Department of Paleontology of the San Diego Natural History Museum for almost 20 years. His research interests included the Paleogene stratigraphy and mammal faunas of southern California and the western United States, and the theoretical foundations of biostratigraphy, biochronology, and chronostratigraphy.

Publications:

Papers—

Rasmussen, D. T., M. Shekelle, S. L. Walsh, and B. O. Riney. 1995. The dentition of Dyseolemur, and comments on the use of the anterior teeth in primate systematics. Journal of Human Evolution 29:301-320.

Robinson, P., G. F. Gunnell, S. L. Walsh, W. Clyde, J. Storer, R. K. Stucky, D. Froehlich, I. Ferrusquia-Villafranca, and M. C. McKenna. 2004. Wasatchian through Duchesnean biochronology of North America, in Woodburne, M. O. editor, Late Cretaceous and Cenozoic Mammals of North America: Biostratigraphy and Geochronology: New York, Columbia University Press. p. 106-155.

Silcox, M. T., K. D. Rose, and S. L. Walsh. 2002. New specimens of picromomyids (Plesiadapiformes, Primates) with description of a new species of Alveojunctus. Annals of Carnegie Museum 71:1-11.

Walsh, S. L., 1987. Mammalian paleontology of the southern outcrops of the Mission Valley Formation, San Diego County, California. Unpub. undergraduate thesis, Department of Geology, San Diego State University, 171 p.

Walsh, S. L., 1991a. Late Eocene mammals from the Sweetwater Formation, San Diego County, California; pp. 149-159 in P. L. Abbott and J. A. May (eds.), Eocene Geologic History San Diego Region. Pacific Section SEPM Volume 68.

Walsh, S. L., 1991b. Eocene mammal faunas of San Diego County; pp. 161-178 in P. L. Abbott and J. A. May (eds.), Eocene Geologic History San Diego Region. Pacific Section SEPM Volume 68.

Walsh, S. L., 1996a. Middle Eocene mammal faunas of San Diego County, California; pp. 75-119 in D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America. Cambridge University Press, Cambridge.

Walsh, S. L., 1996b. Theoretical biochronology, the Bridgerian/Uintan boundary, and the "Shoshonian Subage" of the Uintan; pp. 52-74 in D. R. Prothero and R. J. Emry (eds.). The Terrestrial Eocene-Oligocene Transition in North America. Cambridge University Press, Cambridge.

Walsh, S. L., 1997. New specimens of Metanoiamys, Pauromys, and Simimys (Rodentia: Myomorpha) from the Uintan (middle Eocene) of San Diego County, California, and comments on the relationships of selected Paleogene Myomorpha. Proceedings of the San Diego Society of Natural History no. 32, p. 1-20.

Walsh, S. L., 1998a. Fossil datum terms, paleobiological event terms, paleontostratigraphy, chronostratigraphy, and the definition of land-mammal "age" boundaries. Journal of Vertebrate Paleontology 18:150-179.

Walsh, S. L., 1998b. Notes on the anterior dentition and skull of Proterixoides (Mammalia: Insectivora: Dormaaliidae), and a new dormaaliid genus from the early Uintan (middle Eocene) of southern California. Proceedings of the San Diego Society of Natural History no. 34, p. 1-26.

Walsh, S. L., 1998c. History and semantics of the "monophyly debate." Evolutionary Theory 11:307-323.

Walsh, S. L., 1998d. Diachrony of mammalian appearance events: Comment. Geology 26:955-956.

Walsh, S. L., 2000a. Bunodont artiodactyls (Mammalia) from the Uintan (middle Eocene) of San Diego County, California. Proceedings of the San Diego Society of Natural History no. 37, p. 1-27.

Walsh, S. L. 2000b. Eubiostratigraphic units, quasibiostratigraphic units, and "assemblage zones." Journal of Vertebrate Paleontology 20:761-775.

Walsh, S. L. 2001. Notes on geochronologic and chronostratigraphic units. Geological Society of America Bulletin 113:704-713.

Walsh, S. L. 2003. Notes on geochronologic and chronostratigraphic units: Reply. Geological Society of America Bulletin 115:1017-1019.

Walsh, S. L., 2004. Solutions in chronostratigraphy: The Paleocene/Eocene boundary debate, and Aubry vs. Hedberg on chronostratigraphic principles. Earth-Science Reviews 64:119-155.

Walsh, S.L., 2004. Time and time-rock again: an essay on the (over)simplification of stratigraphy. The Palaeontology Newsletter, v. 57, p. 18-26.

Walsh, S.L. 2005. The role of stratotypes in stratigraphy. Part 1: Stratotype functions. Earth-Science Reviews 69:307-332.

Walsh, S.L. 2005. The role of stratotypes in stratigraphy. Part 2: The debate between Kleinpell and Hedberg, and a proposal for the codification of biochronologic units. Earth-Science Reviews 70:47-73.

Walsh, S.L. 2005. The role of stratotypes in stratigraphy. Part 3: The Wood Committee, the Berkeley school of mammalian stratigraphic paleontology, and the status of provincial golden spikes. Earth-Science Reviews 70:75-101

Walsh, S.L. 2006. Hierarchial subdivision of the Cenozoic Era: A venerable solution, and a critique of current proposals. Earth-Science Reviews 78:207-237.

WALSH, S.L. 2008. The Neogene: origin, adoption, evolution, and controversy. Earth Science Reviews 89:42-72.

Walsh, S. L., and T. A. Demere. 1991. Age and stratigraphy of the Sweetwater and Otay formations, San Diego County, California; pp. 131-148 in P. L. Abbott and J. A. May (eds.), Eocene Geologic History San Diego Region. Pacific Section SEPM Volume 68.

Walsh, S. L., and R. Estes. 1985. Earlier Eocene? microvertebrate fossils from San Diego County, California: A preliminary report; pp. 75-83 in P. L. Abbott (ed.), On the Manner of Deposition of the Eocene Strata in Northern San Diego County. San Diego Association of Geologists field trip guidebook.

Walsh, S. L., F. M. Gradstein, and J. G. Ogg. 2004. History, philosophy, and application of The Global Stratotype Section and Point (GSSP). Lethaia 37:201-218.

Walsh, S. L., D. R. Prothero, and D. J. Lundquist. 1996. Stratigraphy and paleomagnetism of the middle Eocene Friars Formation and Poway Group in southwestern San Diego County, California; pp. 120-154 in D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America. Cambridge University Press, Cambridge.

Walsh, S. L., J. E. and Storer, Cylindrodontidae; in C. M. Janis, Gunnell, and M. D. Uhen (eds.), Evolution of Tertiary Mammals of North America, Volume 2: Marine Mammals and Smaller Terrestrial Mammals. Cambridge University Press, Cambridge, UK (in press).

 

Abstracts—

Walsh, S. L., 2001. New specimens of Merycobunodon (Artiodactyla, Oromerycidae) from the early Uintan of San Diego County, California. Journal of Vertebrate Paleontology 21, supplement to no. 3, p. 111A (abstract).

Walsh, S. L., 2002. The Paleocene/Eocene boundary debate, and Aubry vs. Hedberg on chronostratigraphic principles. Journal of Vertebrate Paleontology 22, supplement to no. 3, p. 117A (abstract).

Walsh, S. L., and R. Q. Gutzler. 1999. Late Duchesnean-early Chadronian mammals from the upper member of the Pomerado Conglomerate, San Diego, California. Journal of Vertebrate Paleontology 19, supplement to no. 3, p. 82A (abstract).