Sirenian Family (Fig 1) (IMAGE) Duke University Caption Four surviving members of the sea cow family tree are compared to Stellar’s sea cow, an Aleutian animal nearly twice the size of an African elephant that was hunted to extinction two centuries ago. (Christy Horton from Heritage & Sieffert, PeerJ Fig. 1) Credit Christy Horton from Heritage & Sieffert, PeerJ Fig. 1 Usage Restrictions none License Original 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.