Burrows in the crater (image) Geological Society of America Share Print E-Mail Caption A sketch of the Chicxulub crater under the sea with the deep seafloor showing the different types of observed bioturbations (Ichnogenera), with photos from the studied cores. Courtesy Francisco J. Rodríguez-Tovar. Credit Francisco J. Rodríguez-Tovar. Usage Restrictions Credit Francisco J. Rodríguez-Tovar. Share Print E-Mail 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.