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Asflapristis; Temporal range: Turonian-Santonian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Superorder:	Batoidea
Order:	Rajiformes
Suborder:	†Sclerorhynchoidei
Family:	†Ptychotrygonidae
Genus:	†Asflapristis; Villalobos-Segura, Underwood, Ward, & Claeson, 2019
Type species
	†Asflapristis cristadentis; Villalobos-Segura, Underwood, Ward, & Claeson, 2019
Other species
	†Asflapristis rugosa ; (Case, Schwimmer, Borodin & Leggett, 2001);
Synonyms
	Species synonymy A. rugosa Erguitaia rugosa ; Case, Schwimmer, Borodin & Leggett, 2001; Ptychotrygon rugosum ; (Case, Schwimmer, Borodin & Leggett, 2001); ; ;

Asflapristis is an extinct genus of ptychotrygonid sclerorhynchoid that lived during the Late Cretaceous. It contains two valid species:^[3] A. cristadentis from the Akrabou Formation of Morocco^[1] and A. rugosa from the Eutaw Formation of Georgia^[2] and Mississippi^[4] and the Pleasant Creek Formation of North Carolina.^[5] Articulated skeletons of A. cristadentis show it had secondarily lost the rostral denticles typical of sclerorhynchoids,^[1] a process called "depristification".^[6]

References

^ ^a ^b ^c Villalobos-Segura, E.; Underwood, C.J.; Ward, D.J.; Claeson, K.M. (2019). "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)" (PDF). Journal of Systematic Palaeontology. 17 (21): 1847–1870. Bibcode:2019JSPal..17.1847V. doi:10.1080/14772019.2019.1578832. S2CID 145940997.
^ ^a ^b Case, G.R.; Schwimmer, D.R.; Borodin, P.D.; Leggett, J.J. (2001). "A new selachian fauna from the Eutaw Formation (Upper Cretaceous/early to middle Santonian) of Chattahoochee County, Georgia". Palaeontographica Abteilung A. 261 (4–6): 83–102. doi:10.1127/pala/261/2001/83.
^ ^a ^b 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. 42 (2): e2162411. doi:10.1080/02724634.2022.2162411. PMC 7614936. PMID 37564697.
^ Cicimurri, D.J.; Ciampaglio, C.N.; Runyon, K.E. (2014). "Late Cretaceous elasmobranchs from the Eutaw Formation at Luxapalila Creek, Lowndes County, Mississippi". PalArch's Journal of Vertebrate Palaeontology. 11 (2): 1–36.
^ Cicimurri, D.J.; Weems, R.E. (2021). "First record of Ptychotrygon rugosum (Case, Schwimmer, Borodin, and Leggett, 2001) (Batomorphii, Sclerorhynchiformes, Ptychotrygonidae) in the United States Atlantic Coastal Plain". Journal of Vertebrate Paleontology. 41 (2): e1933996. doi:10.1080/02724634.2021.1933996.
^ Greenfield, T. (2024). "Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)". Mesozoic. 1 (2): 121–124. doi:10.11646/MESOZOIC.1.2.3.

[Villalobos-Segura_et_al._2019-1] Villalobos-Segura, E.; Underwood, C.J.; Ward, D.J.; Claeson, K.M. (2019). "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)" (PDF). Journal of Systematic Palaeontology. 17 (21): 1847–1870. Bibcode:2019JSPal..17.1847V. doi:10.1080/14772019.2019.1578832. S2CID 145940997.

[Case_et_al._2001-2] Case, G.R.; Schwimmer, D.R.; Borodin, P.D.; Leggett, J.J. (2001). "A new selachian fauna from the Eutaw Formation (Upper Cretaceous/early to middle Santonian) of Chattahoochee County, Georgia". Palaeontographica Abteilung A. 261 (4–6): 83–102. doi:10.1127/pala/261/2001/83.

[Begat_et_al._2023-3] 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. 42 (2): e2162411. doi:10.1080/02724634.2022.2162411. PMC 7614936. PMID 37564697.

[Cicimurri_et_al._2014-4] Cicimurri, D.J.; Ciampaglio, C.N.; Runyon, K.E. (2014). "Late Cretaceous elasmobranchs from the Eutaw Formation at Luxapalila Creek, Lowndes County, Mississippi". PalArch's Journal of Vertebrate Palaeontology. 11 (2): 1–36.

[Cicimurri_&_Weems_2021-5] Cicimurri, D.J.; Weems, R.E. (2021). "First record of Ptychotrygon rugosum (Case, Schwimmer, Borodin, and Leggett, 2001) (Batomorphii, Sclerorhynchiformes, Ptychotrygonidae) in the United States Atlantic Coastal Plain". Journal of Vertebrate Paleontology. 41 (2): e1933996. doi:10.1080/02724634.2021.1933996.

[Greenfield_2024-6] Greenfield, T. (2024). "Pristification: Defining the convergent evolution of saws in sharks and rays (Chondrichthyes, Neoselachii)". Mesozoic. 1 (2): 121–124. doi:10.11646/MESOZOIC.1.2.3.

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