Vertebrate extinction across Permian-Triassic boundary in Karoo Basin, South Africa: Reply

Abstract

Research Article| September 01, 2004 Vertebrate extinction across Permian-Triassic boundary in Karoo Basin, South Africa: Reply G.J. Retallack G.J. Retallack 1Department of Geological Sciences, University of Oregon, Eugene, Oregon 97403, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2004) 116 (9-10): 1295–1296. https://doi.org/10.1130/B25614.1 Article history received: 30 Mar 2004 accepted: 30 Mar 2004 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation G.J. Retallack; Vertebrate extinction across Permian-Triassic boundary in Karoo Basin, South Africa: Reply. GSA Bulletin 2004;; 116 (9-10): 1295–1296. doi: https://doi.org/10.1130/B25614.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Our hypothesis of terminal-Permian vertebrate mass extinction by pulmonary edema (Retallack et al., 2003) rested on observations of victims (1) and survivors (2) of mass murder, and a plausible lethal weapon (3), as follows: (1) mass mortality of vertebrates at the Permian-Triassic boundary; (2) improved respiratory capacity of earliest-Triassic survivors (development of secondary bony palate, shortened internal nares, high dorsal vertebral spines, thickened ribs, barrel chests, shortened limbs, reduced lumbar ribs); and (3) evidence of dramatically lowered earliest Triassic atmospheric oxygen levels (berthierine in paleosols, lowered stomatal index of seed ferns from increased carbon dioxide, declining carbon isotope... You do not have access to this content, please speak to your institutional administrator if you feel you should have access.