title: An extraterrestrial impact at the Permian-Triassic boundary?
authors.affiliation: Department of Earth Science and Astronomy, University of Tokyo, Komaba, Tokyo 153-8902, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Isozaki
mesh_terms: D000818:Animals; D002681:China; D005580:Fossils; D019015:Geologic Sediments / Q000737:chemistry*; D006371:Helium / Q000032:analysis*; D007554:Isotopes; D007564:Japan; D019110:Meteoroids; D010163:Paleontology
chemical_list: D007554:Isotopes; D006371:Helium