Concept
Version 7
Created by Boundless
The Origins of Archaea and Bacteria
Stromatolites
(a) These living stromatolites are located in Shark Bay, Australia. (b) These fossilized stromatolites, found in Glacier National Park, Montana, are nearly 1.5 billion years old.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Prokaryotic Diversity. October 16, 2013."
http://cnx.org/content/m44603/latest/Figure_22_01_02ab.jpg
OpenStax CNX
CC BY 3.0.