Author: univerkov

Cenozoic era

The Cenozoic era (the era of new life) began 65 million years ago and continues to the present day. It is subdivided into tertiary and quaternary periods. Angiosperms
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Mesozoic era

The Mesozoic era (the era of middle life) began 250 million years ago. It is subdivided into three periods: Triassic, Cretaceous and Jurassic. At the beginning of the
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Palaeozoic

The Paleozoic era (the era of ancient life) began 570 million years ago. In the early periods of this era, a significant part of the land and the
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