Chicxulub (IMAGE) Dartmouth College Caption An artist's depiction shows a comet striking coastal Yucatan, forming the giant Chicxulub impact crater and causing the extinction of the non-avian dinosaurs. Credit Don Davis/NASA Usage Restrictions None 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.