Espesye sa pagi nga una nga gihulagway ni Peter Forsskål ni adtong 1775 ang Pastinachus sephen[2]. Ang Pastinachus sephen sakop sa kahenera nga Pastinachus sa kabanay nga Dasyatidae.[12][13] Giklaseklase sa IUCN ang espesye sa kapos sa datos.[1] Pagka karon wala pay siak nga nalista ubos niini niya.[12]
Last, P.R. and L.J.V. Compagno (1999) Dasyatididae. Stingrays., p. 1479-1505. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae). FA
Last, P.R. and B.M. Manjaji-Matsumoto (2010) Description of a new stingray, Pastinachus gracilicaudus sp. nov. (Elasmobranchii: Myliobatiformes), based on material from the Indo-Malay Archipelago., 115-128 pp. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of new sharks and rays from Borneo. CSIRO Marine and Atmospheric Research Paper no. 32.
Nishida, K. and K. Nakaya (1990) Taxonomy of the genus Dasyatis (Elasmobranchia, Dasyatidae) from the North Pacific., NOAA Tech. Rept. NMFS 90:327-346.
Eschmeyer, W.N. (ed.) (1999) Catalog of fishes. Updated database version of November 1999., Catalog databases as made available to FishBase in November 1999.
Compagno, L.J.V. (1999) Checklist of living elasmobranchs., p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland.