Ptychotrygon

Ptychotrygon is a genus of sawfish-like ray whose fossils have been found worldwide from the Cretaceous period (Albian-Maastrichtian).^[1] Along with Ptychotrygonoides, Texatrygon, and Asflapristis, it is the member of the family Ptychotrygonidae within the suborder Sclerorhynchoidei.^[2][3]

Ptychotrygon Temporal range: Albian–Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg N
Ptychotrygon sp. oral teeth from the Cretaceous of Texas, USA
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Rajiformes
Suborder:	†Sclerorhynchoidei
Family:	†Ptychotrygonidae
Genus:	†Ptychotrygon Jaekel, 1894
Species
See text.

Species

The following species are considered valid:^[4][2]

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