Benthic Foram (image) The Earth Institute at Columbia University Share Print E-Mail Caption The single-celled organism Stensioeina beccariiformis survived the asteroid impact that killed the dinosaurs 65 million years ago but went extinct nine million years later, when the oceans acidified due to a massive CO2 release. It ranged across many depths, in all oceans. Credit Ellen Thomas Usage Restrictions None 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.