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

  title={Abrupt and Gradual Extinction Among Late Permian Land Vertebrates in the Karoo Basin, South Africa},
  author={Peter D. Ward and Jennifer Botha and Roger Buick and Michiel O. de Kock and Douglas H. Erwin and Geoffrey H. Garrison and Joseph L. Kirschvink and Roger M. H. Smith},
  pages={709 - 714}
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… Expand
Comment on "Abrupt and Gradual Extinction Among Late Permian Land Vertebrates in the Karoo Basin, South Africa"
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