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

@article{Ward2005AbruptAG,
  title={Abrupt and Gradual Extinction Among Late Permian Land Vertebrates in the Karoo Basin, South Africa},
  author={P. Ward and J. Botha and R. Buick and Michiel O De Kock and D. Erwin and G. Garrison and J. Kirschvink and R. Smith},
  journal={Science},
  year={2005},
  volume={307},
  pages={709 - 714}
}
  • P. Ward, J. Botha, +5 authors R. Smith
  • Published 2005
  • Medicine, Geology
  • Science
  • 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… CONTINUE READING
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    The terrestrial Permian-Triassic boundary event bed is a nonevent
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