Fossil Species (IMAGE)

George Washington University

Fossil Species

Caption

Each blue rectangle shows the range of a hypothetical fossil species, with an origination and extinction date. The red highlighted box shows a cluster of originations that occur at about the same time.

Credit

W. Andrew Barr

Usage Restrictions

With appropriate credit

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.