User:Jtwsaddress42/Projects/Project 1/Sections/Chapter 10/Phase II - The Oxygen Crisis and the Rise of the Aerobic Bioshphere (1.9-0.95 bya)


 * Posibacteria - Loss of outer plasma membrane/thickening of murein cell wall
 * Rise of the Ozone Layer/Rusting of the terrestrial crust/Canfield Ocean (1.9-0.9 bya)