Revised 29 Dec. 2022
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Oxynotus Rafinesque 1810 oxýs (Gr. ὀξύς), sharp; nṓtos (Gr. νῶτος), back, referring to its keeled back (“dorso carenato”)

Oxynotus bruniensis (Ogilby 1893) –ensis, Latin suffix denoting place: the shore of Bruny Island, Tasmania, where holotype was discovered in a “dried … but fair state of preservation”

Oxynotus caribbaeus Cervigón 1961 from the Caribbean coast of Venezuela, type locality

Oxynotus centrina (Linnaeus 1758) from “Centrina,” name for this shark dating to at least Giovio’s De romanis piscibus (1524), presumably derived from centrum, Latinized from kéntron (Gr. κέντρον), any sharp point, referring to spines on both dorsal fins

Oxynotus japonicus Yano & Murofushi 1985 –icus (L.), belonging to: Japan (specifically, Suruga Bay in Honshu), type locality

Oxynotus paradoxus Frade 1929 Latin for strange or contrary to expectation; Frade was not sure if this shark, with its first dorsal spine directed backward instead of forward, represented a new species or an aberrant form of O. centrina