Ptychotrygon

Ptychotrygon is a genus of sawfish-like ray whose fossils have been found worldwide from the Cretaceous period (Albian-Maastrichtian). Along with Ptychotrygonoides, Texatrygon, and Asflapristis, it is the member of the family Ptychotrygonidae within the suborder Sclerorhynchoidei.

Species

The following species are considered valid:

• †Ptychotrygon ameghinorum
• †Ptychotrygon blainensis
• †Ptychotrygon eutawensis
• †Ptychotrygon geyeri
• †Ptychotrygon mcnultyi
• †Ptychotrygon nazeensis
• †Ptychotrygon pustulata
• †Ptychotrygon rostrispatula
• †Ptychotrygon striata
• †Ptychotrygon triangularis
• †Ptychotrygon vermiculata

References