Orthacodontidae is an extinct

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

shark Sharks are a group of elasmobranch cartilaginous fish characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head. Modern sharks are classified within the ...

s. It is disputed as to whether it belongs to the modern shark order Hexanchiformes, or the extinct order Synechodontiformes.'''' It contains two genera. Some other authors included it in Lamniformes.

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

Jurassic sharks Cretaceous sharks Hexanchiformes Shark families Prehistoric cartilaginous fish families Callovian first appearances Selandian extinctions {{paleo-shark-stub