| paleozoic | <geology> Of or pertaining to, or designating, the older division of geological time during which life is known to have existed, including the Silurian, Devonian, and Carboniferous ages, and also to the life or rocks of those ages. See Chart of Geology. Origin: Paleo- + Gr. Life, fr. To live. Source: Websters Dictionary (01 Mar 1998) |
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| paleozoic | from 230 million to about 544 million years ago |
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| paleozoic | from 230 million to about 544 million years ago |
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