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Cephalotropis is a genus of baleen whale belonging to the extinct family Cetotheriidae. Its type species is Cephalotropis coronatus.
Cephalotropis is diagnosed by the following features: a long sagittal crest, a more anteriorly produced angle of the supraoccipital angle, among other features. There is insufficient information to determine how big Cephalotropis was, but it probably grew to about 16-20 feet long.
Cephalotropis coronatus was originally described from the Late Miocene (Tortonian) St. Mary's Formation of St. Mary's Formation, Maryland, based on the holotype USNM 9352. A second species of the genus, C. nectus, was named for a specimen from a Tortonian-aged formation in Portugal, but is now considered a junior synonym of C. coronatus.
- ^ Case, E. C., 1904. Systematic Paleontology, Miocene, Mammalia, in Clark, W. B., Shattuck, G. B., and Dall, W. H., The Miocene
- ^ E. D. Cope. 1896. Sixth contribution to the knowledge of the marine Miocene fauna of North America. Proceedings of the American Philosophical Society 35(150):139-146
- ^ R. Kellogg. 1940. On the cetotheres figured by Vandelli. Boletime do Labrotorio Mineralogico e Geologico da Universidade de Lisboa 3(7-8):13-23
- ^ P. Mocho and L. Povons. 2010. Contribucao para revisao sistematica de um cranio de Cephalotropis Cope, 1896 (Cetacea: Cetotheriidae) do Miocenico superior (Tortoniano inferior) da Adica (Sesimbra, Portugal). Jornadas de la Sociedad Espanola do Paleontologia Lisboa, Portugal 26:180-183