Family Dalatiidae

Dalatias - * ambiguous synonym

Euprotomicroides - The first specimen of the taillight shark was collected by the Cape Town trawler Arum in 1963, and was initially identified as a longnose pygmy shark before being recognized as a hitherto unknown species.

Euprotomicrus - The pygmy shark, Euprotomicrus bispinatus, the second-smallest of all the shark species after the dwarf lanternshark, is a sleeper shark of the Dalatiidae family, the only member of the genus Euprotomicrus.

Heteroscymnoides - The longnose pygmy shark, Heteroscymnoides marleyi, is a sleeper shark of the family Dalatiidae, the only member of the genus Heteroscymnoides, found in the tropical southeast Atlantic and western Indian oceans, at depths down to 500 m.

Isistius - Isistius is a genus of dogfish sharks in the family Dalatiidae.

Mollisquama - The pocket shark, Mollisquama parini, is a sleeper shark of the family Dalatiidae, the only member of the genus Mollisquama, found in deep water off Chile in the southeast Pacific Ocean.

Squaliolus - Squaliolus is a genus of deep-sea dogfish sharks in the family Dalatiidae.