Biogeochemical evidence for dinoflagellate ancestors in the Early Cambrian

被引：175

作者：

Moldowan, JM ^{[1
]}

Talyzina, NM

机构：

[1] Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA

[2] Uppsala Univ, Dept Earth Sci Hist Geol & Paleontol, S-75236 Uppsala, Sweden

来源：

SCIENCE | 1998年 / 281卷 / 5380期

关键词：

D O I：

10.1126/science.281.5380.1168

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：

Dinoflagellates are single-celled organisms that reflect the ecological conditions in modern oceans and Lakes. Ultrastructural data and molecular phylogeny suggest that they originated in the Neoproterozoic, yet dinoflagellate ancestors are classified only to the Middle Triassic (similar to 240 million years ago). Examination of dinoflagellate-specific biological markers (dinosteranes and 4 alpha-methyl-24-ethylcholestane) in concentrated microfossils with known morphology identified ancient dinoflagellate ancestors from the Early Cambrian (similar to 520 million years ago).

引用

页码：1168 / 1170

页数：3

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