Chrysocetus
Chrysocetus (from Greek "chrysous", "golden", and "ketos", "whale", in reference to the gold-colored bones of the type specimen) is a genus of extinct early whale known from Late Eocene-aged fossils of the eastern United States and western Africa. Taxonomy. The type species, "Chrysocetus healyorum", is based on a single subadult specimen from the late middle or early late Eocene of Orangeburg County, South Carolina (, paleocoordinates ). The holotype, SCSM 87.195, consists of a partial skull with lower jaws, ten teeth, and the hyoid apparatus; 21 vertebrae, some ribs and a sternum; a partial left forelimb; and partial innominates . A second species, "Chrysocetus fouadassii", is known from Bartonian-age deposits in the Western Sahara. Description. "Chrysocetus" is similar to "Zygorhiza" except that it lacks the denticles on the cingula of the upper premolars characteristic of "Zygorhiza". The premolars of "Chrysocetus" have smoother enamel than other dorudontines and are more gracile than those of "Dorudon".