Tuesday, March 11, 2014

Your 3.5 Billion Year Old Family Tree



One of the coolest bits about teaching students evolution is that they get to learn that they are related to every living thing.  For example, Dunkleosteus, the critter pictured above, is your 185 millionth great-grandparent.  If you take your family tree even further back you can find that you and that oak tree outside share an ancestor from about 1.4 billion years ago. 

No comments:

Post a Comment