Family Somniosidae

Centroscymnus - See text.

Centroselachus - The longnose velvet dogfish, Centroscymnus crepidater, is a sleeper shark of the family Dalatiidae, found circumglobally in southern hemisphere subtropical seas, at depths of between 230 and 1,500 m.

Proscymnodon - Proscymnodon is a genus of fish in the Somniosidae family.

Scymnodalatias - See text.

Scymnodon - See text.

Somniosus - Somniosus is a genus of dogfish sharks in the family Somniosidae.

Zameus - Zameus is a genus of dogfish shark in the family Somniosidae, containing two species.