obtusa, Raia Gill [T. N.] & Townsend [C. H.] 1897:231 [Proceedings of the Biological Society of Washington v. 11; ref. 1749] Bering Sea. Holotype: USNM 48763. •Valid as Rhinoraja obtusa (Gill & Townsend 1897) -- (Compagno 1999:489 [ref. 25589]). •Synonym of Bathyraja parmifera (Bean 1881) -- (Stehmann 1986:263 [ref. 6151], Mecklenburg et al. 2002:98 [ref. 2596], Orr et al. 2011:35 [ref. 31854], Dyldin 2015:60 [ref. 34524] as Arctoraja, Weigmann 2016:95 [ref. 34211], Last et al. 2016:26 [ref. 34941]). •Synonym of Arctoraja parmifera (Bean 1881). Current status: Synonym of Arctoraja parmifera (Bean 1881). Arhynchobatidae. Habitat: marine.