Precambrian+Era

=Precambrian By Ricardo Torres and Donovan Benson=

What kinds of animals were in this period?
There weren't many animals, there were only single celled life forms like bacteria. Close to the end of this era simple multi-cellular life forms started to form.

What plants appeared?
There were no plants in this era, plants started to appear in the Paleozoic era.

What animals or plants went extinct?
Animals from this time peroid are still around today.

Important events:
Life started in this era. The earth's crust started to cool and made land. The ozone layer was formed and without it we could not have lived. Go to Cambrian Pictures from [] [] and []

Information from []