title: Periodicity in extinction.
authors.affiliation: Department of Geophysical Sciences, University of Chicago, Illinois, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Sepkoski
mesh_terms: D000818:Animals; D005075:Biological Evolution; D017753:Ecosystem; D005580:Fossils; D019015:Geologic Sediments; D008386:Marine Biology; D019110:Meteoroids; D008962:Models, Theoretical; D010507:Periodicity