 However, one identifying feature is the light horizontal line below the eyes on the cheek.Since it shares the northeast Atlantic with another species of "Oxynotus", other distinguishing features include the extremely large spiracles, their dorsal fins, and their large dermal denticles above their eyes.Like most of the "Oxynotus" species, "O. centrina" has lanceolate upper teeth and blade-like lower teeth, with 12 rows of teeth on either side.