posted Nov 24, 2010, 2:52 PM by Abel Mendez
updated Nov 24, 2010, 4:41 PM
Earth during the Cambrian Period was relatively warm and without polar caps. Most of the continents resembled deserts and were clustered in the southern hemisphere. Life was small and simple mostly in the oceans. There were no land plants but fungi, algae, and lichens probably greened many land areas.