Abrupt and gradual extinction among Late Permian land vertebrates in the Karoo Basin, South Africa

被引：252

作者：

Ward, PD ^{[1
]}

Botha, J

Buick, R

De Kock, MO

Erwin, DH

Garrison, GH

Kirschvink, JL

Smith, R

机构：

[1] Univ Washington, Dept Biol, Seattle, WA 98195 USA

[2] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA

[3] S African Museum, ZA-8000 Cape Town, South Africa

[4] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[5] Rand Afrikaans Univ, Dept Geol, Johannesburg, South Africa

[6] MRC121 Smithsonian Inst, Dept Paleobiol, Washington, DC 20013 USA

来源：

SCIENCE | 2005年 / 307卷 / 5710期

关键词：

D O I：

10.1126/science.1107068

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：709 / 714

页数：6

共 38 条

[1] Carbon isotope excursion in atmospheric CO2 at the Cretaceous-Tertiary boundary:: Evidence from terrestrial sediments [J].