thouin, Raja Anonymous (ex Lacepède) 1798:677, 685, Pl. 1 (figs. 2-4) [Allgemeine Literatur-Zeitung 1798 (pt. 3) (nos. 287-288); ref. 13098] No locality (is probably Indonesia). Syntypes: ?MNHN A-7950 (1) Red Sea. Also spelled thouini in literature. See Bertin 1939:79-80 [ref. 20739]. On Code recommendation 51D, the anonymous author is listed as Lacepède in square brackets; the convention of Anonymous [Lacepède] 1798 is used by us for clarity. •Valid as Rhinobatos thouin (Anonymous 1798) -- (Dor 1984:15 [ref. 29757], Compagno & Randall 1987:340 [ref. 9128], Goren & Dor 1994:4 [ref. 25356], Compagno & Last 1999:1429 [ref. 24637], Compagno 1999:485 [ref. 25589], Compagno in Randall & Lim 2000:582 [ref. 25122], Manilo & Bogorodsky 2003:S93 [ref. 27377], Bonfil & Abdallah 2004:46 [ref. 27735], Last et al. 2006:267 [ref. 29418]). •Valid as Glaucostegus thouin (Anonymous 1798) -- (Last el al. 2010:154 [ref. 32461], Weigmann 2016:85 [ref. 34211], Last et al. 2016:473 [ref. 34473], Séret et al. 2016:115 [ref. 34993], Golani & Fricke 2018:15 [ref. 36273], Kumar et al. 2018:297 [ref. 36178], Psomadakis et al. 2020:197 [ref. 37272], Habib & Islam 2021:141 [ref. 38397], Haroon & Kibria 2021:96 [ref. 39241] as thouini, Séret & Carvalho 2022:574 [ref. 39672]). Current status: Valid as Glaucostegus thouin (Anonymous [Lacepède] 1798). Glaucostegidae. Distribution: Red Sea; Indo-West Pacific: Gulf of Aden east to Thailand, north to Japan, south to New Caledonia. IUCN (2019): Critically endangered. Habitat: marine.