Aptychotrema Norman [J. R.] 1926:977 Neut. Rhinobatus (Syrrhina) bougainvillii Valenciennes 1841. Type by subsequent designation. Earliest subsequent type designation not researched; possibly first designated by Séret and McEachran 1987:5 [ref. 9312]. •Valid as Aptychotrema Norman 1926 -- (Paxton et al. 1989:52 [ref. 12442], Gomon et al. 1994:169 [ref. 22532], Compagno & Last 1999:1425 [ref. 24637], Compagno 1999:485 [ref. 25589], Last 2004:204 [ref. 27765], Paxton et al. 2006:177 [ref. 28994], Gomon 2008:104 [ref. 30616], Last et al. 2016:464 [ref. 34473] in Trygonorrhinidae, Last & Séret 2016:118 [ref. 34994]). Current status: Valid as Aptychotrema Norman 1926. Trygonorrhinidae.