SIZE OF THE PERMO-TRIASSIC BOTTLENECK AND ITS EVOLUTIONARY IMPLICATIONS

被引:334
作者
RAUP, DM
机构
[1] Department of Geology, Field Museum of Natural History, Chicago, IL 60605, Roosevelt Road at Lake Shore Drive
关键词
D O I
10.1126/science.206.4415.217
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
Rarefaction analysis of extinctions in the Late Permian indicates that as many as 96 percent of all marine species may have died out, thus forcing the marine biosphere to pass through a small bottleneck. With such severity of extinction, chance elimination of certain biologic groups would have been probable. Some of the changes in biologic composition observed at the Permo-Triassic boundary may be explained as an evolutionary founder effect that followed the bottleneck.
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页码:217 / 218
页数:2
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