This category includes biological taxa of rank more inclusive than genus that evolved during the Paleozoic era of geologic time, between 541 and 252 million years ago, as well as genera and species that evolved during this time and persisted across multiple geological eras.
Subcategories
This category has the following 9 subcategories, out of 9 total.
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C
D
E
O
P
S
Pages in category "Paleozoic first appearances"
This category contains only the following page. This list may not reflect recent changes.