Ptychotrygon Explained

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]}

Species

The following species are considered valid:^[4]

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

Notes and References

1. Begat . A. . Kriwet . J. . Gelfo . J.N. . Cavalli . S.G. . Schultz . J.A. . Martin . T. . 2023 . The first southern hemisphere occurrence of the extinct Cretaceous sclerorhynchoid sawfish Ptychotrygon (Chondrichthyes, Batoidea), with a review of Ptychotrygon taxonomy . Journal of Vertebrate Paleontology . e2162411 . 10.1080/02724634.2022.2162411 . free. 7614936 .
2. Villalobos‐Segura. Eduardo. Underwood. Charlie J.. Ward. David J.. The first skeletal record of the enigmatic Cretaceous sawfish genus Ptychotrygon (Chondrichthyes, Batoidea) from the Turonian of Morocco. Papers in Palaeontology. 2021. 7. 353–376. en. 10.1002/spp2.1287. 210302939 . 2056-2802.
3. 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. 10.1080/14772019.2019.1578832. 145940997. 1477-2019.
4. Web site: Fossilworks: Ptychotrygon. 17 December 2021. fossilworks.org.