acus, Centrophorus Garman [S.] 1906:204 [Bulletin of the Museum of Comparative Zoology v. 46 (no. 11); ref. 1542] Yokohama market, Japan. Holotype (unique): MCZ 1049-S [ex Owston #7949]. Type catalog: Hartel & Dingerkus 1997:xl [ref. 23119]. •Valid as Centrophorus acus Garman 1906 -- (Compagno 1984:36 [ref. 6474], Nakaya in Okamura & Kitajima 1984:59, 304 [ref. 8057], Nakaya & Shirai in Masuda et al. 1984:10 [ref. 6441], Yano & Kugai 1993:47 [ref. 23206], McEachran & Fechhelm 1998:107 [ref. 23897] as ascus, Compagno 1999:472 [ref. 25589], Nakabo 2000:153 [ref. 25086], Compagno in Randall & Lim 2000:580 [ref. 25122], Shinohara et al. 2001:289 [ref. 25995], Nakabo 2002:153 [ref. 26001], Compagno 2003:391 [ref. 26984] as cf. acus, Kiraly et al. 2003:9 [ref. 28226] as cf. acus, Espinosa Pérez et al. 2004:94 [ref. 27705] as ascus, Shinohara et al. 2005:395 [ref. 28370], White et al. 2008:19 [ref. 29674]). •Synonym of Centrophorus granulosus (Bloch & Schneider 1891) -- (White et al. 2013:43 [ref. 33033], Ebert et al. 2013:288 [ref. 33045], Weigmann 2016:53 [ref. 34211], Fricke et al. 2024:81 [ref. 41622] as ascus). Current status: Synonym of Centrophorus granulosus (Bloch & Schneider 1801). Centrophoridae. Habitat: marine.