Heptranchias Rafinesque [C. S.] 1810:13 Masc. Squalus cinereus Gmelin 1789. Type by monotypy. Heptanchus Müller & Henle is an unjustified emendation. Spelled Heptranchus and Heptancus by authors. •Valid as Heptranchias Rafinesque 1810 -- (Boeseman 1973:8 [ref. 7161], Boeseman in Whitehead et al. 1984:72 [ref. 13675], Compagno 1984:17 [ref. 6474], Nakaya & Shirai in Masuda et al. 1984:3 [ref. 6441], Bass et al. 1986:45 [ref. 5638], Cappetta 1987:49 [ref. 6348], Paxton et al. 1989:26 [ref. 12442], Gomon et al. 1994:87 [ref. 22532], Herman et al. 1994:149 [ref. 27820], Compagno 1999:471 [ref. 25589], Compagno 2003:375 [ref. 26984], Compagno et al. 2005:47 [ref. 29145], Hoese & Gates 2006:135 [ref. 28997], White 2008:76 [ref. 30617], Lipej & Dulčić 2010:5 [ref. 36649], Castro 2011:27 [ref. 31457], Shinohara et al. 2011:38 [ref. 31715], Stewart 2015:116 [ref. 34217], Dyldin 2015:42 [ref. 34524], Del Moral-Flores et al. 2016:55 [ref. 34398], Ehemann et al. 2018:23 [ref. 36194], Fricke et al. 2018:18 [ref. 35805], Kumar et al. 2018:290 [ref. 36178], Ebert et al. 2021:18 [ref. 38234]). Current status: Valid as Heptranchias Rafinesque 1810. Hexanchidae.