Question

Describe the two most important events in the history of animal life that occurred at the beginning and at the end of the Paleozoic era. List and briefly outline the six different periods into which the Palezoic era is divided.

Answer 1

1.Cambrian period
2.Ordovician period
3.Silurian period
4.Devonian period
5.Carboniferous period
6.Permian period