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Paleozoic

Pa·le·o·zo·ic

Paleozoic

pronunciation:
peI li zo ihk [or] pae li zo ihk
features:
Word Explorer, Word Parts
part of speech: adjective
definition: of, relating to, or belonging to the era in the earth's history from about 540 million years ago to about 250 million years ago. During this time, the first fishes, amphibians, reptiles, insects, and land plants appeared.
 
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The word paleozoic contains the following parts:
pale, paleo Greek root that means ancient