antarcticus, Somniosus Whitley [G. P.] 1939:242 [Australian Zoologist v. 9 (pt 3); ref. 4695] Macquarie Island, south of Tasmania. Holotype (unique): tooth and skin samples (whereabouts unknown). Species described from a drawing in Waite 1916:51, Fig. 10. [ref. 4568]. •Questionably a synonym of Somniosus microcephalus (Bloch & Schneider 1801) -- (Compagno 1984:103, 105 [ref. 6474], Compagno 1990:84 [ref. 21678]). •Synonym of Somniosus pacificus Bigelow & Schroeder 1944 -- (Last & Stevens 1994:90 [ref. 23873]). •Valid as Somniosus antarcticus Whitley 1939 -- (Yano et al. 2004:369, 370 [ref. 28078], Duhamel et al. 2005:62 [ref. 32059], Hoese & Gates 2006:147 [ref. 28997], Benz et al. 2007:346 [ref. 29289], Stewart & Last 2015:159 [ref. 34225], Dyldin 2015:56 [ref. 34524], Weigmann 2016:64 [ref. 34211], Fricke et al. 2018:20 [ref. 35805], Almeida & Biscoito 2019:110 [ref. 37302], Hsu et al. 2020:8 [ref. 37776], Ebert et al. 2021:32 [ref. 38234], Kemper & Ebert 2022:440 [ref. 39661], Carvalho-Filho 2023:294 [ref. 40480], Leeney 2024:33 [ref. 40985]). Current status: Valid as Somniosus antarcticus Whitley 1939. Somniosidae. Distribution: Circumglobal in Southern Hemisphere. Habitat: marine.