title: J. John Sepkoski Jr. (1948-1999).
authors.affiliation: Geophysical Sciences Department, University of Chicago, Illinois 60637, USA. draup@mail.wiscnet.net
authors.forename: D M
authors.initials: DM
authors.lastname: Raup
mesh_terms: D000818:Animals; D005075:Biological Evolution; D016208:Databases, Factual; D005580:Fossils; D049673:History, 20th Century; D010163:Paleontology / Q000266:history*; D014481:United States