trachyderma, Raja (Dipturus) Krefft [G.] & Stehmann [M. F. W.] 1975:86, Figs. 7-8 [Archiv für Fischereiwissenschaft v. 26 (no. 3); ref. 7435] Off southern Argentina, southwestern Atlantic, 49°00'S, 60°52'W, depth 200-195 meters. Holotype (unique): ZMH 25402 [ex ISH 130-1971]. Type catalog: Krefft 1978:7 [ref. 9884], Thiel et al. 2009:26 [ref. 30918]. Specific name is an undeclinable noun. •Valid as Raja trachyderma Krefft & Stehmann 1975 -- (Pequeño 1989:17 [ref. 14125], Séret 1989:127 [ref. 12827], Lloris & Rucabado 1991:47 [ref. 22530], López et al. 1996:13 [ref. 23681]). •Valid as Dipturus trachyderma (Krefft & Stehmann 1975) -- (McEachran & Dunn 1998:285 [ref. 23312], Compagno 1999:491 [ref. 25589], Cousseau et al. 2000:13 [ref. 40447], Menni & Stehmann 2000:80 [ref. 24909], Gomes & Paragó 2001:1 [ref. 25669], Soto & Mincarone 2001:6 [ref. 26630], López et al. 2002:62 [ref. 26808] as trachydermus, Jeong & Nakabo 2008:189 [ref. 29612], Mabragaña et al. 2011:7 [ref. 31800], Moreira et al. 2011:108 [ref. 40695], Vargas-Caro et al. 2015:328 [ref. 33982], Weigmann 2016:110 [ref. 34211] as trachydermus, Last et al. 2016:22 [ref. 34941] as trachydermus, Last et al. 2016:276 [ref. 35000] as trachydermus, Nión et al. 2016:22 [ref. 35565], Figueroa et al. 2024:6 [ref. 40977]). Current status: Valid as Dipturus trachyderma (Krefft & Stehmann 1975). Rajidae. Distribution: Southeastern Pacific and southwestern Atlantic: Uruguay to Chile, possibly southern Brazil. Habitat: marine.