Ptychotrygon
Ptychotrygon
Extinct genus of cartilaginous fishes
Ptychotrygon is a genus of sawfish-like Late Cretaceous ray whose fossils have been found worldwide.[1] It, Ptychotrygonoides, Texatrygon, and Asflapristis are members of the family Ptychotrygonidae within the suborder Sclerorhynchoidei.[2][3]