Orthacodontidae

Orthacodontidae is an extinct family of sharks. It is disputed as to whether it belongs to the modern shark order Hexanchiformes,^[1] or the extinct order Synechodontiformes.^[2] It contains two genera. Some other authors included it in Lamniformes.^[3]

Orthacodontidae Temporal range: Early Jurassic–Paleocene PreꞒ Ꞓ O S D C P T J K Pg N
The head of a Sphenodus nitidus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Family:	†Orthacodontidae Glikman, 1957
Genera
Occitanodus Guinot, Cappetta & Adnet, 2014 Sphenodus Agassiz, 1843

Species

• Occitanodus Guinot, Cappetta & Adnet, 2014
  • Occitanodus sudrei Guinot, Cappetta & Adnet, 2014
• Sphenodus Agassiz, 1843
  • Sphenodus alpinus Gümbel, 1861
  • Sphenodus longidens Agassiz, 1843
  • Sphenodus lundgreni Davis, 1890
  • Sphenodus macer Quenstedt, 1852
  • Sphenodus nitidus Wagner, 1862
  • Sphenodus planus Agassiz, 1843
  • Sphenodus rectidens Emmons, 1858
  • Sphenodus robustidens Seguenza, 1900
  • Sphenodus tithonius Gemmellaro, 1871
  • Sphenodus virgai Gemmellaro, 1871

References

1. "Sphenodus longidens | Shark-References". shark-references.com. Retrieved 2023-12-02.
2. 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.
3. 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.