The Paleozoic Era, which ran from 541 million to 251.9 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another.

The Cambrian Period is the first geological time period of the Paleozoic Era (the "time of ancient life"). This period lasted from 541 million to 485.4 million years ago, or more than 55 million ...

The best time to see the ancient wonders that are horseshoe crabs is now, as they return to Delaware Bay beaches for spawning ...

The curious minds at What If transport us to the Paleozoic Era and envision what life would be like in this ancient period. Congress pushes VA to explain why it regularly overpays veterans and ...

Here are 14 dragonfly facts that may surprise you ... Some scientists theorize that high oxygen levels during the Paleozoic era allowed these dragonfly ancestors to grow to monster sizes.

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 began to appear on land—before the ...

This time period took place 359 to 299 million years ago. 3 min read The Carboniferous period, part of the late Paleozoic era, takes its name from large underground coal deposits that date to it.

Researchers reconstruct biodiversity changes during the early Paleozoic Era. Marine biodiversity underwent large and abrupt changes during the early Paleozoic Era. However, the temporal resolution ...