Publication Date:
2005-01-22
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ward, Peter D -- Botha, Jennifer -- Buick, Roger -- De Kock, Michiel O -- Erwin, Douglas H -- Garrison, Geoffrey H -- Kirschvink, Joseph L -- Smith, Roger -- New York, N.Y. -- Science. 2005 Feb 4;307(5710):709-14. Epub 2005 Jan 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Washington, Seattle, WA 98195, USA. argo@u.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15661973" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Biodiversity
;
Carbon Isotopes/analysis
;
*Ecosystem
;
Environment
;
*Fossils
;
Geologic Sediments
;
Magnetics
;
Plants
;
South Africa
;
Time
;
*Vertebrates
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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