Ph.D., 1986, Ohio State University

M.A.T., 1992, Oregon State University, Science and Math Education.

Research Interests:

Cenozoic marine mollusks of western South America
Quaternary record of El Nino

Student Independent Studies Projects:

Kevin Applegate, 2003. Web design: Mollusks of the Pisco Basin.

Brian Hess, 2002. An unusual Pliocene trochid from Peru

Dillon Lockwood, 2002. An unusual Pliocene buccinid from Peru: a South African connection?

Sam Garabadian, 2000. Web design: Cyber-fieldtrip to the Pisco Basin.

Rosemary Galpin, 1997: Morphometric analysis of modern and fossil Panopea (Mollusca: Bivalvia).

Selected Publications:

DeVries, T. J., and W. G. Pearcy. 1982. Fish debris in sediments of the upwelling zone off central Peru: a late Quaternary record. Deep-Sea Research, 28(1A):87-109.

Muizon, C. de, and T. J. DeVries. 1985. Geology and paleontology of the Pisco Formation in the area of Sacaco, Peru. Geologische Rundschau, 74(3):547-563.

Ortlieb, L., T. DeVries, and A. Diaz. 1990. Ocuriencia de Chione broggi (Pilsbry and Olsson, 1943) (Pelecypoda) en depositos litorales Cuaternarios del sur del Perú: Implicaciones paleoceanográficas. Boletín de la Sociedad Geológica del Perú, 81:127-134.

DeVries, T. J., L. Ortlieb, A. Diaz, L. Wells, and Cl. Hillaire-Marcel. 1997. Determining the early history of El Niño. Science, 276: 965-966.

DeVries, T. J. 1998. Oligocene deposition and Cenozoic sequence boundaries in the Pisco Basin (Peru). Journal of South American Earth Sciences, 11(3):217-231.

DeVries, T. J. 2000. Two new Neogene species and the evolution of labral teeth in Concholepas Lamarck, 1801 (Neogastropoda: Muricoidea). The Veliger, 43(1):43-50.

DeVries, T. J. and B. Hess. (in press) Piscoacritia gen. nov.: First account of tribe Trochini (Gastropoda: Trochidae: Trochinae) from the Cenozoic of western South America. The Veliger.

Email: vhsperu@aol.com