Asflapristis

Asflapristis
Temporal range: Turonian-Santonian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Rajiformes
Family: †Ptychotrygonidae
Genus: †Asflapristis
Villalobos-Segura, Underwood, Ward, & Claeson, 2019[1]
Type species
†Asflapristis cristadentis
Villalobos-Segura, Underwood, Ward, & Claeson, 2019
Other species
  • †Asflapristis rugosa
    (Case, Schwimmer, Borodin & Leggett, 2001)[2]
Synonyms
Species synonymy
  • A. rugosa[3]
      • 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]

  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  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.
  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.
  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.