Cambrian period

Cambrian period

The first part of the Paleozoic era: 590 to 505 million years ago.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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Noun1.Cambrian period - from 544 million to about 500 million years ago; marine invertebrates
Cambrian
Paleozoic, Paleozoic era - from 544 million to about 230 million years ago
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