Precambrian Era

By: Michael Erickson

What is it named after

The prefix pre- means before so the Precambrian era came before the Cambrian era

When did it occur

It occurred about 4.6 BYA and ended around 542 MYA.


4 BYA was the most dangerous time period on Earth.

  • Meteors would hit the surface, volcanoes would erupt spewing lava rock all over the land.
  • Fierce heat waves would hit the earths surface.
  • Hydrogen, methane, ammonia was in the atmosphere and no oxygen

Living Organisms?

  • They were one celled organisms like bacteria
  • Later in the Precambrian Era multicellular animals started to form
  • Like the creature below it is one of the first multicellular animal
Big image


"Precambrian Era." Precambrian Era. N.p., n.d. Web. 06 May 2015

"Precambrian Era Map." N.p., n.d. Web.

"First Ever Computer Model of a Living Organism Performed." ZME Science. N.p., 23 July 2012. Web. 06 May 2015.

Karpelenia, Jenny. Geologic Time. Logan, IA: Perfection Learning, 2005. Print.

"Precambrian Time, Earth History Information, Prehistoric Facts -- National Geographic." National Geographic. N.p., n.d. Web. 06 May 2015