Edestidae

Edestidae Temporal range: 360–200 Ma PreЄ Є O S D C P T J K Pg N Early Carboniferous to Early Jurassic
Edestus protopirata
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Eugeneodontida
Clade:	†Edestoidea
Family:	†Edestidae Jaekel, 1899
Genera
Edestus Helicampodus Lestrodus Metaxyacanthus Parahelicampodus Physonemus Prospiraxis Syntomodus

The Edestidae are a poorly known, extinct family of shark-like eugeneodontid holocephalid cartilaginous fish. Similar to the related family Helicoprionidae, members of this family possessed a unique "tooth-whorl" on the symphysis of the lower jaw and pectoral fins supported by long radials. In addition to having a tooth-whorl on the lower jaw, at least one species of the genus Edestus had a second tooth-whorl in the upper jaw. The palatoquadrate was either fused to the skull or reduced. Edestids, along with the rest of the Eugeneodontida, are placed within the Holocephali.