William A. Clemens
University of California Museum of Paleontology and Department of Integrative Biology
University of California
Berkeley, California 94720
USA. 

Bill Clemens continues a career-long interest in the evolution of mammals and their ancestors during the Jurassic, Cretaceous, and Paleocene.  Most of his field research has been in the Western Interior of North America but it has been interspersed with projects as distant as Alaska’s North Slope and the English coast near Hastings.  Studies of the resulting collections and those in American, European, and Chinese museums, range from systematic and faunal analyses to studies of the intricacies of enamel microstructure.  Currently he is involved with colleagues in analyzing biotic change across the Cretaceous/Tertiary boundary as documented in northeastern Montana.