A new species of the lungfish Ceratodus (Dipnoi) from the Early Cretaceous of the eastern U.S.A. Frederickson, Joseph A. ; Lipka, Thomas R. ; Cifelli, Richard L. Abstract Publication: Journal of Vertebrate Paleontology Pub Date: July 2016 DOI: 10.1080/02724634.2016.1136316 Bibcode: 2016JVPal..36E6316F