Lifelike Illustration of Adalatherium (IMAGE) University of Louisville Caption The image was drawn from a complete, 3-dimensional fossil discovered in Madagascar. The unusually large mammal, named Adalatherium, is part of a group of mammals known as gondwanatherians. It lived at the time of dinosaurs, roughly 66 million years ago. Credit Image courtesy Denver Museum of Nature & Science/Andrey Atuchin Usage Restrictions Credit Denver Museum of Nature & Science and Andrey Atuchin 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.