Ptychotrygon

{{Short description|Extinct genus of cartilaginous fishes}}

{{Automatic taxobox

| fossil_range = {{fossilrange/linked|Albian|Maastrichtian|refs=}}

| image = Ptychotrygon sp.jpg

| image_caption = Ptychotrygon sp. oral teeth from the Cretaceous of Texas, USA

| taxon = Ptychotrygon

| authority = Jaekel, 1894

| subdivision_ranks = Species

| subdivision = See text.

}}

Ptychotrygon is a genus of sawfish-like ray whose fossils have been found worldwide from the Cretaceous period (Albian-Maastrichtian).{{cite journal |last1=Begat |first1=A. |last2=Kriwet |first2=J. |last3=Gelfo |first3=J.N. |last4=Cavalli |first4=S.G. |last5=Schultz |first5=J.A. |last6=Martin |first6=T. |date=2023 |title=The first southern hemisphere occurrence of the extinct Cretaceous sclerorhynchoid sawfish Ptychotrygon (Chondrichthyes, Batoidea), with a review of Ptychotrygon taxonomy |journal=Journal of Vertebrate Paleontology |page=e2162411 |doi=10.1080/02724634.2022.2162411 |doi-access=free|pmc=7614936 }} Along with Ptychotrygonoides, Texatrygon, and Asflapristis, it is the member of the family Ptychotrygonidae within the suborder Sclerorhynchoidei.{{Cite journal|last1=Villalobos‐Segura|first1=Eduardo|last2=Underwood|first2=Charlie J.|last3=Ward|first3=David J.|title=The first skeletal record of the enigmatic Cretaceous sawfish genus Ptychotrygon (Chondrichthyes, Batoidea) from the Turonian of Morocco|url=https://onlinelibrary.wiley.com/doi/abs/10.1002/spp2.1287|journal=Papers in Palaeontology|year=2021|volume=7|pages=353–376|language=en|doi=10.1002/spp2.1287|s2cid=210302939 |issn=2056-2802}}{{Cite journal|last1=Villalobos-Segura|first1=Eduardo|last2=Underwood|first2=Charlie J.|last3=Ward|first3=David J.|last4=Claeson|first4=Kerin M.|date=2019-11-02|title=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)|url=https://doi.org/10.1080/14772019.2019.1578832|journal=Journal of Systematic Palaeontology|volume=17|issue=21|pages=1847–1870|doi=10.1080/14772019.2019.1578832|s2cid=145940997|issn=1477-2019}}