ringens, Scymnodon Barbosa du Bocage [J. V.] & de Brito Capello [F.] 1864:263, Fig. 5 [Proceedings of the Zoological Society of London 1864 (pt 2); ref. 479] [Nossos mares] Portugal, eastern Atlantic. Syntypes: ?BMNH 1867.7.23.3 (1). •Valid as Scymnodon ringens Barbosa du Bocage & de Brito Capello 1864 -- (Krefft & Tortonese 1973:44 [ref. 7165], McEachran & Branstetter in Whitehead et al. 1984:142 [ref. 13675], Compagno 1984:99 [ref. 6474], Taniuchi & Garrick 1986:119 [ref. 5721], Paulin et al. 1989:14 [ref. 24556], Springer 1990:16 [ref. 19315], Wetherbee & Crow 1996:335 [ref. 22434], Compagno 1999:474 [ref. 25589], George 2009:56 [ref. 30539], White et al. 2014:7 [ref. 33542], Duffy & Ahyong 2015:106 [ref. 36167], Stewart & Last 2015:158 [ref. 34225], Weigmann 2016:64 [ref. 34211] first author as Barboza du Bocage, Bañón et al. 2016:299 [ref. 34397], Compagno 2016:1197 [ref. 34544], Biscoito et al. 2018:474 [ref. 37562], Almeida & Biscoito 2019:106 [ref. 37302], Carneiro et al. 2019:33 [ref. 37250], Bañón & Mano 2022:6 [ref. 40121]). Current status: Valid as Scymnodon ringens Barbosa du Bocage & de Brito Capello 1864. Somniosidae. Distribution: North Sea; northeastern Atlantic: British Isles south to Senegal, including Madeira (Portugal); southwestern Pacific. Habitat: marine.