Evolutionary Tree (IMAGE) University of Texas at Austin Caption The fossils of the mother and babies belonged to Kayentatherium, a close relative to mammals. Credit Eva Hoffman, The University of Texas at Austin Usage Restrictions Credit image 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.