Late Pliocene faunal turnover in the Turkana Basin, Kenya and Ethiopia

被引：165

作者：

Behrensmeyer, AK ^{[1
]}

Todd, NE ^{[1
]}

Potts, R ^{[1
]}

McBrinn, GE ^{[1
]}

机构：

[1] SMITHSONIAN INST,MUSEUM NATL HIST NAT,NHB MRC 121,EVOLUT TERR ECOSYST PROGRAM,WASHINGTON,DC 20560

来源：

SCIENCE | 1997年 / 278卷 / 5343期

关键词：

D O I：

10.1126/science.278.5343.1589

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：

Analysis of a large sample of well-dated fossil mammals from localities in tl-e Turkana Basin of Kenya and Ethiopia revealed sampling biases that affect patterns of faunal turnover during the late Pliocene, When these biases were accounted for, results indicated that 58 to 77 percent of the mammal species were replaced between 3.0 and 1.8 million years ago (Ma), Overall diversity increased from 3.0 to 2.0 Ma but then declined. No distinct turnover pulse is seen between 2.8 and 2.5 Ma; instead, the most significant period of faunal change began after 2.5 Ma and continued through 1.8 Ma.

引用

页码：1589 / 1594

页数：6

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