title: Biodiversity:  past, present, and future.
authors.affiliation: Department of the Geophysical Sciences, University of Chicago, Illinois 60637, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Sepkoski
mesh_terms: D000818:Animals; D005075:Biological Evolution; D018534:Earth, Planet; D017753:Ecosystem; D005580:Fossils; D010163:Paleontology