Concept
Version 7
Created by Boundless
Evolution of Viruses
![Common ancestor tree of life](../../../../../../../../../figures.boundless-cdn.com/20486/full/tree-20of-20life.jpeg)
Common ancestor tree of life
This phylogenetic tree of the three domains of life (Bacteria, Archaea, and Eukarya) attempts to identify when various species diverged from a common ancestor. Finding a common ancestor for viruses has proven to be far more difficult, especially since they do not fossilize.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Organizing Life on Earth. November 9, 2013."
http://cnx.org/content/m44588/latest/#fig-ch20_01_01
OpenStax CNX
CC BY 3.0.