Fish Diversified in Shallow Ocean Waters (IMAGE) University of Pennsylvania Caption Bothriolepis, an armored, bottom-dwelling placoderm related to some of the earliest jawed vertebrates to appear in the record, lived mostly at the coasts. Credit Nobumichi Tamura Usage Restrictions In context of reporting 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.