Category:Proterozoic first appearances

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Here is a list of articles in the category Proterozoic first appearances of the Biology portal. This category includes biological taxa of rank more inclusive than genus that evolved during the Proterozoic eon of geologic time, between 2500 and 541 million years ago, as well as genera and species that evolved during this time and persisted across multiple geological eons.

Pages in category "Proterozoic first appearances"

The following 2 pages are in this category, out of 2 total.