plutodus, Isistius Garrick [J. A. F.] & Springer [S.] 1964:679, Figs. 1-2 [Copeia 1964 (no. 4); ref. 1883] Off coast of Alabama, U.S.A., 28°58'N, 88°18'W, Oregon station 3102, midwater over bottom depth of 445-545 fathoms. Holotype (unique): USNM 188386. Type catalog: Howe & Springer 1993:11 [ref. 21812]. •Valid as Isistius plutodus Garrick & Springer 1964 -- (Compagno 1984:95 [ref. 6474], Nakaya & Shirai in Masuda et al. 1984:11 [ref. 6441], Castro-Aguirre & García-Domínguez 1988:105 [ref. 19199], McEachran & Fechhelm 1998:121 [ref. 23897], Compagno 1999:475 [ref. 25589], Nakabo 2000:150 [ref. 25086], McGrouther 2001:442 [ref. 25580], Soto 2001:66 [ref. 26637], Nakabo 2002:150 [ref. 26001], Compagno 2003:414 [ref. 26984], Gadig & Gomes in Menezes et al. 2003:26 [ref. 27192], Kiraly et al. 2003:9 [ref. 28226], Espinosa Pérez et al. 2004:100 [ref. 27705], Shinohara et al. 2005:395 [ref. 28370], Hoese & Gates 2006:146 [ref. 28997], Castro 2011:151 [ref. 31457], Stehmann & Kukuev 2015:77 [ref. 33817], Del Moral-Flores et al. 2016:65 [ref. 34398], Weigmann 2016:56 [ref. 34211], Compagno 2016:1212 [ref. 34544], Ehemann et al. 2018:23 [ref. 36194], Figueiredo Petean & Carvalho 2018:27 [ref. 36078], Almeida & Biscoito 2019:113 [ref. 37302], Carneiro et al. 2019:30 [ref. 37250], Sutton et al. 2020:16 [ref. 37832], Ebert et al. 2021:36 [ref. 38234], Carvalho-Filho 2023:293 [ref. 40480], Page et al. 2023:41 [ref. 40505], Fricke et al. 2024:79 [ref. 41622]). Current status: Valid as Isistius plutodus Garrick & Springer 1964. Dalatiidae. Distribution: Atlantic, western Pacific: antiequatorial. Habitat: marine.