3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas and the first primitive plants ... with sea levels rising as much ...

The beginning and end of each chunk of time in the geologic time scale is determined by when some species appeared or disappeared from the fossil record ... The end of the Paleozoic and beginning of ...

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 ...

The Devonian, part of the Paleozoic era, is otherwise known as ... fish that lacked jaws developed a range of bizarre forms. Fossil specimens include species with horseshoe-shaped heads and ...

visitors can follow fossil evidence tracing the evolution of life during the Cambrian period — the first geological period of the Paleozoic era — which lasted from 541 million to 485 million ...