Paleozoic Age

by Giancarlo Varnier
$3.70
eBook

Publisher: ALVIS International Editions

Publication Date: May 14, 2015

ISBN: 9781301927296

Binding: Kobo eBook

Availability: eBook

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The Palaeozoic or Primary Era spans a period of time ranging from 542 million to 251 million years ago. The name Paleozoic, derives from the fact that, in the past, it was considered the first geological age. The Paleozoic covers a range of about 300 million years, giving rise to many forms of life, until the appearance of thecodonts, commonly believed to be the ancestors of dinosaurs.