Abrupt and Gradual Extinction Among Late Permian Land Vertebrates in the Karoo Basin, South Africa | Zendy

Peter D. Ward | Zendy; Jennifer Botha | Zendy; Roger Buick | Zendy; Michiel de Kock | Zendy; Douglas H. Erwin | Zendy; Geoffrey H. Garrison | Zendy; Joseph L. Kirschvink | Zendy; Roger M. H. Smith | Zendy

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Abrupt and Gradual Extinction Among Late Permian Land Vertebrates in the Karoo Basin, South Africa

Author(s) -

Peter D. Ward,

Jennifer Botha,

Roger Buick,

Michiel de Kock,

Douglas H. Erwin,

Geoffrey H. Garrison,

Joseph L. Kirschvink,

Roger M. H. Smith

Publication year - 2005

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1107068

Subject(s) - permian , paleontology , geology , extinction event , extinction (optical mineralogy) , vertebrate , permian–triassic extinction event , paleomagnetism , magnetostratigraphy , structural basin , isotopes of carbon , stratigraphy , ecology , tectonics , total organic carbon , biology , biological dispersal , population , biochemistry , demography , sociology , gene

The Karoo basin of South Africa exposes a succession of Upper Permian to Lower Triassic terrestrial strata containing abundant terrestrial vertebrate fossils. Paleomagnetic/magnetostratigraphic and carbon-isotope data allow sections to be correlated across the basin. With this stratigraphy, the vertebrate fossil data show a gradual extinction in the Upper Permian punctuated by an enhanced extinction pulse at the Permian-Triassic boundary interval, particularly among the dicynodont therapsids, coinciding with negative carbon-isotope anomalies.

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