vacca, Squalus Bloch [M. E.] & Schneider [J. G.] 1801:138 [M. E. Blochii, Systema Ichthyologiae; ref. 471] No locality. •Synonym of Hexanchus griseus (Bonnaterre 1788) -- (Compagno 1984:19 [ref. 6474], Castro 2011:31 [ref. 31457], Dyldin 2015:43 [ref. 34524]). Current status: Synonym of Hexanchus griseus (Bonnaterre 1788). Hexanchidae. Habitat: marine.