DOUGLAS W. OWSLEY, lead investigator for this study, is the division head for physical anthropology at the National Museum of Natural History, Smithsonian Institution in Washington, D.C.
MARGARET A. JODRY is a Paleoindian archeologist and a senior adjunct scientist in the department of anthropology, National Museum of Natural History in Washington.
THOMAS W. STAFFORD JR., of Lafayette, Colorado, is a geochronologist, biogeochemist, and quaternary geologist working on late Pleistocene human origins and animal paleoecological studies throughout the New World.
C. VANCE HAYNES JR. is a Regents Professor Emeritus specializing in the geochronology of Paleoindian archaeological sites. He resides in Tucson, Arizona.
DENNIS J. STANFORD is the head of the division of archaeology at the National Museum of Natural History and director of the Smithsonian's Paleoindian/Paleoecology Program.