Rasptooth dogfish
The rasptooth dogfish is a dogfish, found on the Kyushu-Palau Ridge in the northwest Pacific Ocean at depths of 360 m. Its maximum length is unknown. This species was originally described as Centroscyllium sheikoi, and subsequently allocated to the newly-named genus Miroscyllium based on anatomical features not shared with other Centroscyllium. More recent molecular data suggest this species belongs to the genus Etmopterus, but as of June 2014 Miroscyllium sheikoi remains the valid name recognized by FishBase, the Catalog of Fishes World Register of Marine Species, and the IUCN
;Extinct Miroscyllium
The genus name Miroscyllium was proposed in 1990 to encompass a single living species and in 2006 was expanded to include fossil teeth of an extinct species recovered from the Miocene strata in Vaucluse, southwestern France. The teeth of Miroscyllium are similar to those of Etmopterus, but differ in having multiple cusps on the tooth crowns.
