Paleozoic era(redirected from Palaeozoic Era)
Also found in: Thesaurus, Medical, Encyclopedia.
The first part of the Phanerozoic eon, 509 to 248 million years ago.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
Switch to new thesaurus
|Noun||1.||Paleozoic era - from 544 million to about 230 million years ago|
Age of Fishes, Devonian, Devonian period - from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites
Ordovician, Ordovician period - from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.