Orthacodontidae

Orthacodontidae
Temporal range:
Head of Archaeogracilidens macer
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Family: †
Glikman, 1957
Genera

Orthacodontidae (also spelled Orthacodidae[1]) is an extinct family of sharks. It is disputed as to whether it belongs to the modern shark order Hexanchiformes,[2] or the extinct order Synechodontiformes.[3] It contains three genera. Some other authors included it in Lamniformes.[4] More recent studies have generally favored its placement in the Hexanchiformes.[1]

Species

  • Archaeogracilidens Villalobos-Segura et al. 2025
    • Archaeogracilidens macer (Quenstedt, 1852)
  • Occitanodus Guinot, Cappetta & Adnet, 2014
    • Occitanodus sudrei Guinot, Cappetta & Adnet, 2014
  • Sphenodus Agassiz, 1843 (Nomen dubium)[1]
    • Sphenodus alpinus Gümbel, 1861
    • Sphenodus longidens Agassiz, 1843
    • Sphenodus lundgreni Davis, 1890
    • Sphenodus planus Agassiz, 1843
    • Sphenodus rectidens Emmons, 1858
    • Sphenodus robustidens Seguenza, 1900
    • Sphenodus tithonius Gemmellaro, 1871
    • Sphenodus virgai Gemmellaro, 1871

References

  1. ^ a b c Villalobos-Segura, Eduardo; Amadori, Manuel; Stumpf, Sebastian; Jambura, Patrick L.; Begat, Arnaud; Lopez-Romero, Faviel A.; Schweigert, Günter; Maxwell, Erin E.; Kriwet, Jürgen (2025-12-31). "Articulated specimens provide new insights into the iconic Mesozoic shark genus Sphenodus". Journal of Systematic Palaeontology. 23 (1). doi:10.1080/14772019.2025.2507014. ISSN 1477-2019.
  2. ^ "Sphenodus longidens | Shark-References". shark-references.com. Retrieved 2023-12-02.
  3. ^ Villalobos-Segura, Eduardo; Stumpf, Sebastian; Türtscher, Julia; Jambura, Patrick L.; Begat, Arnaud; López-Romero, Faviel A.; Fischer, Jan; Kriwet, Jürgen (March 2023). "A Synoptic Review of the Cartilaginous Fishes (Chondrichthyes: Holocephali, Elasmobranchii) from the Upper Jurassic Konservat-Lagerstätten of Southern Germany: Taxonomy, Diversity, and Faunal Relationships". Diversity. 15 (3): 386. doi:10.3390/d15030386. ISSN 1424-2818. PMC 7614348.
  4. ^ Rees, JAN (2010). "Neoselachian sharks from the Callovian-Oxfordian (Jurassic) of Ogrodzieniec, Zawiercie Region, southern Poland". Palaeontology. 53 (4): 887–902. Bibcode:2010Palgy..53..887R. doi:10.1111/j.1475-4983.2010.00967.x.


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