giganteus, Urolophoides Lindberg [G. U.] in Soldatov & Lindberg 1930:26, Fig. 4 [Izvestiia Tikhookeanskogo Nauchno-Issledovatel'skogo Instituta Rybnogo Khoziaistva i Okeanografii [Proceedings, Pacific Research Institute of Fisheries and Oceanography, TINRO, Moskva] v. 5; ref. 4164] Peter the Great Bay, Russia. Holotype (unique): TINRO uncat. (stuffed). •Valid as Dasyatis giganteus (Lindberg 1930) -- (Nishida & Nakaya 1990:340 [ref. 20166]). •Valid as Dasyatis gigantea (Lindberg 1930) -- (Compagno 1999:495 [ref. 25589], Parin et al. 2014:38 [ref. 33547], Weigmann 2016:129 [ref. 34211]). •Synonym of Dasyatis akajei (Müller & Henle 1841) -- (Dyldin 2015:73 [ref. 34524]). •Synonym of Bathytoshia brevicaudata (Hutton 1875) -- (Last & Yearsley 2016:6 [ref. 34940] with question). Current status: Uncertain as Bathytoshia brevicaudata (Hutton 1875). Dasyatidae: Dasyatinae. Habitat: marine.