Cambrian period (sep 21, 545000000 BC – sep 21, 495000000 BC)
Description:
Known as the Cambrian Explosion, the Cambrian Period is known for its multitude of diverse life forms. Mostly sponge-like creatures grew in the seas, but now animals started to swim, burrow, defend themselves, and crawl. Some life forms grew hard, sturdy shells which fossilized easily and gave us a clear form. There was very little life on land, and the only vegetation was algae. The weather was generally cold but slowly got warmer through the years.Added to timeline:
Date:
sep 21, 545000000 BC
sep 21, 495000000 BC
~ 5883516 years