Etmopterus Rafinesque, 1810
Gender: M; Caratt. Gen. Spec. Sicil.: 14
Type: E. aculeatus Rafinesque = Squalus spinax Linnaeus, by monotypy.
Synonyms
Spinax Cuvier, 1817, Règne anim., 2: 129-130 (type: Squalus spinax Linnaeus, by tautonymy).
Acanthidium Lowe, 1839, Proc. zool. Soc. Lond., 7: 92 (type: A. pusillum Lowe, by subs. design. of Goode and Bean, 1896: 10)