The twin-spot butterfly ray, Gymnura bimaculata (Norman, 1925) (Elasmobranchii: Myliobatiformes; Gymnuridae): reconfirmation of the synonymy of the species G. japonica (Temminck and Schlegal, 1850). Bulletin of the Hoshizaki Gren Foundation, 7, 155–167
First record of a stingray, Himantura fai collected from Iriomote Island, the Ruykyu Islands. Japanese Journal of Ichthyology, 46(1), 39–43
