The Paleozoic era's Silurian period saw animals and plants finally emerge on land. But first there was a period of biological regrouping following the disastrous climax to the Ordovician.

This reptilian skin fossil belongs to a creature from the early Paleozoic era that led terrestrial and aquatic life. Being the oldest known specimen of animal skin, this incredible discovery ...

3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine ... remained confined to the seas with new animals evolving in place of those that didn't survive ...

“It’s really incredible to think how such small animals, ones that don’t even ... influenced geochemical cycles during the ...