Contact: Margaret Fraiser
mfraiser@uwm.edu
414-229-3827
University of Wisconsin - Milwaukee

Earth's Recent Geological Time Scale

Caption: The time scale shows the expanse of time between the Permian-Triassic mass extinction and the less severe mass extinction that wiped out the dinosaurs.

Credit: Nan Fitzpatrick, UW-Milwaukee

Usage Restrictions: with graphic credit

Related news release: When bivalves ruled the world