Paleozoic Era

By: Chris Cruz

When did it occur?

The paleozoic Era took place roughly from 554 million years ago to 251 million years ago. In total about 273 million years long!

What was Earth like?

The earth had cooled. Clouds had formed. Rain had fallen. Organisms were already living on earth at the beginning of the Paleozoic Era. During this time, life became more complex. Shallow seas covered most of the continents.

What kind of organisms lived during the time?

During the Paleozoic Era, many of today's wildlife were developed, including arthropods, fish, reptiles, and amphibians.Early in the era, most organisms were invertebrates. Trilobites were plentiful. Soft-bodied animals like sponges also lived at this time.
Life During the Paleozoic Era