nana, Urotrygon Miyake [T.] & McEachran [J. D.] 1988:366, Figs. 1a, 2a [Bulletin of Marine Science v. 42 (no. 3); ref. 12878] Chiapas, Mexico. Holotype: FMNH 97107. Paratypes: FMNH 97108 (4), SIO 65-167 (41). Additional material: CAS 4734 (1), CAS-SU 46731.1 (1); FMNH 72281 (2); LACM 30745-11 (4), 33806-97 (?). •Valid as Urotrygon nana Miyake & McEachran 1988 -- (van der Heiden & González 1990:147 [ref. 19567], Bussing & López S. 1994:34 [ref. 23101], McEachran in Fischer et al. 1995:791 [ref. 22829], Castro-Aguirre & Espinosa Pérez 1996:51 [ref. 22793], De La Cruz Agüero et al. 1997:43 [ref. 24545], López S. & Bussing 1998:276 [ref. 24917], Castro-Aguirre et al. 1999:69 [ref. 24550], Compagno 1999:494 [ref. 25589], Nelson et al. 2004:57 [ref. 27807], Page et al. 2013:56 [ref. 32708], Del Moral-Flores et al. 2016:126 [ref. 34398], Weigmann 2016:163 [ref. 34211], Last & McEachran 2016:669 [ref. 35013], Ehemann et al. 2018:27 [ref. 36194], Romero-Berny et al. 2018:88 [ref. 35859], González-Acosta et al. 2021:8 [ref. 38361], Page et al. 2023:47 [ref. 40505]). Current status: Valid as Urotrygon nana Miyake & McEachran 1988. Urotrygonidae. Distribution: Eastern Pacific: Mexico south to Panama. Habitat: marine.