Urotrygon rogersi (Jordan &Starks, 1895) .

Roger’s Round Ray or Thorny Stingray.To 55 cm (21.7 in) TL (Robertson and Allen 2015), DW 36 cm (14.2 in) (John Snow, pers. comm. to M.L.). Bahía San Juanico, southern Baja California (Fitch 1953) to Ecuador (De La Cruz-Agüero et al. 1997), including Gulf of California (McEachran in Fischer et al. 1995). Benthic; depth: 2–235 m (7–771 ft) (min.: Castro-Aguirre et al. 1999; max.: Acevedo-Cervantes et al. 2017).