Expert By SamK on December 15, 2023 Category(s)World and PlanetsTopic(s)Paleozoic EraEarth Eras538.8 M - 251.9 M YearsThe time span of Paleozoic Era was 538.8 million years to 251.9 million years ago, while it's duration was approx. 286.898 million years.
