Extant Silurian first appearances

From Wikipedia - Reading time: 1 min

This category includes biological taxa that evolved during the Silurian period of geologic time, between 443.8 and 419.2 million years ago and have not yet gone extinct.


Licensed under CC BY-SA 3.0 | Source: https://en.wikipedia.org/wiki/Category:Extant_Silurian_first_appearances
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