Definition: Chicxulub crater: a very large impact crater near the Yucatan Peninsula in Mexico. The effects of this particular impact may have been responsible for the extinction of the dinosaurs 65 million years ago.
From Nick Greene, former About.com Guide
The top 10 fossil discoveries between 2000 and 2010. More >
Being well prepared is the first step; here are more essential suggestions. More >
©2010 About.com, a part of The New York Times Company.
All rights reserved.