''Prepomatodelphis'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of river dolphin from Early Miocene marine deposits in Austria.

Classification

''Prepomatodelphis'' belongs to the platanistid subfamily Pomatodelphininae, which is distinguished from the South Asian river dolphin in having a flattened rostrum, a transversely expanded posterior end of the premaxilla, an eye and bony orbit of normal size (not atrophied), and nasal bones not reduced in size but wide transversely. Features distinguishing ''Prepomatodelphis'' from ''

Pomatodelphis ''Pomatodelphis'' is an extinct genus of river dolphin from Middle Miocene marine deposits in Alabama, Florida, Brazil, Germany and France. Classification ''Pomatodelphis'' belongs to the platanistid subfamily Pomatodelphininae, which is dist ...

'' include smaller size, cranium with surface of the premaxillary sac fossa undulating, having in its midpart a sulcus bounded both medially and laterally by a ridge, and sloping ventrally at both its medial and lateral margins, and zygomatic process of squamosal very deep dorsoventrally in the posterior part.Barnes, L. G. (2002): An Early Miocene long-snouted marine platanistid dolphin (Mammalia, Cetacea, Odontoceti) from the Korneuburg Basin (Austria). — Beitr. Palaont. 27: 407-418.

References

{{Taxonbar, from=Q55630406 River dolphins Miocene cetaceans Fossils of Austria