Extraterrestrial impacts have left a substantial imprint on the climate and evolutionary history of Earth. A rapid carbon cycle perturbation and global warming event about 56 million years ago at the ...
THE Eocene ran from 56 million to 34 million years ago. Geological evidence from the early and middle part of this period offers troubling news: the average temperature in the tropics at this ...
The record of Eocene sea cows in North America is reviewed in detail, and that of the world is summarized. The North American record includes some 20 localities, mostly yielding fragments identifiable ...
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