paleozoic
English Thesaurus
1. from 544 million to about 230 million years ago (noun.time)
| instance hypernym | : | era, geological era, |
| definition | : | a major division of geological time; an era is usually divided into two or more periods (noun.time) |
| part holonym | : | permian, permian period, |
| definition | : | from 280 million to 230 million years ago; reptiles (noun.time) |
| part holonym | : | age of fishes, devonian, devonian period, |
| definition | : | from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites (noun.time) |
| part holonym | : | silurian, silurian period, |
| definition | : | from 425 million to 405 million years ago; first air-breathing animals (noun.time) |
| part holonym | : | ordovician, ordovician period, |
| definition | : | from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds (noun.time) |
| part holonym | : | cambrian, cambrian period, |
| definition | : | from 544 million to about 500 million years ago; marine invertebrates (noun.time) |
2. of or relating to or denoting the Paleozoic era (adj.pert)
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