Ordovician Silurian
Nov. 4, 2024
A Dinosaur A Day — Extinction Week: Ordovician-Silurian Museo Geominero - @paleontologi_id ・・・ The Ordovician Period is the second periods of the Paleozoic Era. The Ordovician spans for over 41 million years from 485 to 443 million years ago. Life Late Ordovician mass extinction - Wikipedia Ordovician Silurian
