<i>Lingula anatina</i> (IMAGE) Lomonosov Moscow State University Caption Lingula is one of the oldest brachiopods having survived to the present day. It is considered by biologists to be a living fossil what means the organism which has remained unchanged over the past millions of years. Credit Image taken by Elena Temereva. Usage Restrictions None 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.