Goniodelphis hudsoni

Goniodelphis hudsoni is an extinct iniid river dolphin known from the waters of Florida during the Miocene epoch, roughly 14.9 million to 8.7 million years ago. It is the type species of the genus Goniodelphis, named by Allen in 1941. Its fossil specimens were found in only four phosphate mines in Polk County, Florida, called American Agricultural Chemical Company, Fort Green, Payne Creek and Gardinier, which together span several stages of the Miocene. The Paleobiology Database records four fossil collections for the species and places it in the family Iniidae, as most authors since Allen have done, though one earlier classification assigned the genus to the ocean dolphins.