Hypolophus Müller [J.] & Henle [F. G. J.] 1837:117 Masc. Raja sephen Forsskål 1775. Type by subsequent designation (also subsequent monotypy). Also in Müller & Henle 1837:400 [ref. 13421] without species. Species added by Müller & Henle 1841:170 [ref. 3069] but earlier Bonaparte 1838:202 (p. 6 of separate) included one species and designated type (see p. 2 of separate). Spelled Hyplophus by Jordan 1923:104 [ref. 2421]. •Valid as Hypolophus Müller & Henle 1837 -- (Compagno 1986:140 [ref. 5648]). •Valid, but Pastinachus Rüppell 1829 may be a senior synonym -- (Paxton et al. 1989:43 [ref. 12442]). •Synonym of Pastinachus Rüppell 1829 - (Heemstra in Smith & Heemstra 1995:viii [ref. 21953], Last et al. 2005:2 [ref. 28346], Last & Manjaji-Matsumoto 2010:115 [ref. 30854] with question, Kottelat 2013:27 [ref. 32989]). Current status: Synonym of Pastinachus Rüppell 1829. Dasyatidae: Hypolophinae.