Dilophodelphis is an extinct genus of river dolphin from Early Miocene (Burdigalian) marine deposits in Oregon. The type species, Dilophodelphis fordycei, was named in 2017.[1]

Temporal range: Early Miocene
Dilophodelphis fordycei skull.stl
3D model of a Dilophodelphis fordycei skull
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetartiodactyla
Infraorder: Cetacea
Superfamily: Platanistoidea
Genus: Dilophodelphis
Boersma, McMurry, and Pyenson, 2017
Type species
Dilophodelphis fordycei
Boersma, McMurry, and Pyenson, 2017

Biology and descriptionEdit

Dilophodelphis is distinguished from other extinct relatives of the South Asian river dolphin in having enlarged supraorbital crests resembling a twin mountain arrangement, quite similar to the crests of the theropod dinosaur Dilophosaurus.


  1. ^ A. T. Boersma, M. R. McCurry, and N. D. Pyenson. 2017. A new fossil dolphin Dilophodelphis fordycei provides insight into the evolution of supraorbital crests in Platanistoidea (Mammalia, Cetacea). Royal Society Open Science