japonicus, Apristurus Nakaya [K.] 1975:24, Figs. 10-11 [Memoirs of the Faculty of Fisheries Hokkaido University v. 23 (no. 1); ref. 7083] Sea of Japan, off Cape Daito, Chiba Prefecture, Honshu, Japan. Holotype: HUMZ 40082. Paratypes: HUMZ 39961 (1), 40075-81 (7). •Valid as Apristurus japonicus Nakaya 1975 -- (Compagno 1984:168 [ref. 6846], Nakaya in Masuda et al. 1984:4 [ref. 6441], Nakaya in Okamura & Kitajima 1984:41, 295 [ref. 8057], Nakaya & Sato 1999:316 [ref. 23941], Nakaya & Séret 1999:307 [ref. 24247], Sato et al. 1999:334 [ref. 24607], Compagno 1999:478 [ref. 25589], Nakabo 2000:131 [ref. 25086], Nakabo 2002:131 [ref. 26001], Shinohara et al. 2005:392 [ref. 28370], Nakaya et al. 2008:68 [ref. 29711], Dyldin 2015:48 [ref. 34524], Weigmann 2016:31 [ref. 34211], Misawa et al. 2020:268 [ref. 38138]). Current status: Valid as Apristurus japonicus Nakaya 1975. Pentanchidae. Distribution: Northwestern Pacific. Habitat: marine.