My research interests and expertise lie in
two closely related areas of primate paleontology: the exploration for and
recovery of East African PlioñPleistocene mammalian faunas and the analysis of
the fossil record of African human and monkey evolution. During my career, I
have led paleontological surveys at three of East Africaís most important
paleontological sites ó the Shungura Formation in southwestern Ethiopia,
Olduvai Gorge in northern Tanzania, and the Hadar Formation of northeastern
Ethiopia. I have published the primary descriptions and analysis of the monkey
faunas from the Shungura and Hadar Formations and made contributions to the
interpretations of those from Olduvai and other African sites as well.
My most recent fieldwork occurred in the
Hadar Formation as a member of a team organized by the Institute of Human
Origins, Arizona State University. As one of the projectís senior
paleontologists, I led the general paleontological surface survey. The aims of
this survey were to document in which sediments and geographical locations
fossils occurred and to recover those of scientific importance. My crew and I
worked in sediments generally geologically younger than those explored during
the 1970s. My work in the Hadar Formation saw its completion in 2001. I am
presently, with RenÈ Bobe, analyzing the mammalian faunal collections from both
the Shungura and Hadar Formations. We aim to reconstruct the paleoenvironments
of these very important hominid bearing sites so as to better understand the
environmental contexts of early hominid evolution.
In the Department of Anthropology, I
regularly teach the following courses, as well as, irregularly scheduled
seminars: