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