Somniosus Lesueur [C. A.] 1818:222 Masc. Somniosus brevipinna Lesueur 1818. Type by monotypy. Proposed as a "subgenus, allied to the genus Aiguillats (Spix, Cuv.)." Somnolentus Swainson 1838:146 [ref. 4302] is regarded as an incorrect subsequent spelling. •Valid as Somniosus Lesueur 1818 -- (Krefft & Tortonese 1973:46 [ref. 7165], McEachran & Branstetter in Whitehead et al. 1984:143 [ref. 13675], Compagno 1984:102 [ref. 6474], Bass et al. 1986:60 [ref. 5636], Cappetta 1987:62 [ref. 6348], Compagno 1990:84 [ref. 21678], Miller 1993:472 [ref. 21297], Compagno 1999:474 [ref. 25589], Mecklenburg et al. 2002:86 [ref. 25968], Yano et al. 2004:363 [ref. 28078] with 2 subgenera, Hoese & Gates 2006:147 [ref. 28997], Benz et al. 2007:343 [ref. 29289], Parin & Kotlyar 2007:669 [ref. 31012], Mecklenburg et al. 2011:115 [ref. 31212], Castro 2011:115 [ref. 31457], Parin et al. 2014:27 [ref. 33547], Orlov & Baitalyux 2014:533 [ref. 33577], Stewart & Last 2015:159 [ref. 34225], Dyldin 2015:55 [ref. 34524], Pietsch & Orr 2015:16 [ref. 34694], Bañón et al. 2016:299 [ref. 34397], Mecklenburg et al. 2016:15 [ref. 34440], Del Moral-Flores et al. 2016:63 [ref. 34398], Dyldin & Orlov 2018:165 [ref. 35920], Ehemann et al. 2018:24 [ref. 36194], Fricke et al. 2018:20 [ref. 35805], Hsu et al. 2020:1 [ref. 37776], Ebert et al. 2021:32 [ref. 38234]). Current status: Valid as Somniosus Lesueur 1818. Somniosidae.