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. (2 pts) List and briefly outline the six different periods into which the Paleozoic era is divided.

3 answers

http://en.wikipedia.org/wiki/Paleozoic
Ms.Sue Wikipedia is an unreliable soure if u r or used to be a teacher you should know that
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