Ptychotrygon

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]

Ptychotrygon Temporal range: Late Cretaceous,

Ptychotrygon sp. oral teeth from the Cretaceous of Texas, USA
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Superorder:	Batoidea
Order:	Rajiformes
Suborder:	†Sclerorhynchoidei
Family:	†Ptychotrygonidae
Genus:	†Ptychotrygon Jaekel, 1894
Species
See text.

Species

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

†Ptychotrygon blainensis
†Ptychotrygon eutawensis
†Ptychotrygon geyeri
†Ptychotrygon mcnultyi
†Ptychotrygon pustulata
†Ptychotrygon rostrispatula
†Ptychotrygon striata
†Ptychotrygon triangularis
†Ptychotrygon vermiculata

References

"Fossilworks: Ptychotrygon". fossilworks.org. Retrieved 17 December 2021.
Villalobos‐Segura, Eduardo; Underwood, Charlie J.; Ward, David J. (2021). "The first skeletal record of the enigmatic Cretaceous sawfish genus Ptychotrygon (Chondrichthyes, Batoidea) from the Turonian of Morocco". Papers in Palaeontology. 7: 353–376. doi:10.1002/spp2.1287. ISSN 2056-2802. S2CID 210302939.
Villalobos-Segura, Eduardo; Underwood, Charlie J.; Ward, David J.; Claeson, Kerin M. (2019-11-02). "The first three-dimensional fossils of Cretaceous sclerorhynchid sawfish: Asflapristis cristadentis gen. et sp. nov., and implications for the phylogenetic relations of the Sclerorhynchoidei (Chondrichthyes)". Journal of Systematic Palaeontology. 17 (21): 1847–1870. doi:10.1080/14772019.2019.1578832. ISSN 1477-2019. S2CID 145940997.
"Fossilworks: Ptychotrygon". fossilworks.org. Retrieved 17 December 2021.

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