Orthacodontidae


Orthacodontidae is an extinct family of sharks. It is disputed as to whether it belongs to the modern shark order Hexanchiformes, or the extinct order Synechodontiformes. It contains three genera. Some other authors included it in Lamniformes. More recent studies have generally favored its placement in the Hexanchiformes.

Species

  • Archaeogracilidens Villalobos-Segura et al. 2025
  • * Archaeogracilidens macer
  • 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 planus Agassiz, 1843
  • * Sphenodus rectidens Emmons, 1858
  • * Sphenodus robustidens Seguenza, 1900
  • * Sphenodus tithonius Gemmellaro, 1871
  • * Sphenodus virgai Gemmellaro, 1871