COPE, E.D. (1877)
Synopsis of the cold blooded Vertebrata, procured by Prof. James Orton during his exploration of Peru in 1870-77. Proceedings of the American Philosophical Society, 17: 33–49
FOWLER, H.W. (1901)
Types of fishes. Proceedings of the Academy of Natural Sciences of Philadelphia, 53: 327–341, 4 pls.
FOWLER, H.W. (1910)
Notes on batoid fishes. Proceedings of the Academy of Natural Sciences of Philadelphia, 62: 468–475
GARMAN, S. (1913)
The Plagiostomia (Sharks, Skates and Rays). Memoirs of the Museum of Comparative Zoology at Harvard College, 36: 528 p., 77 pl.
EVERMANN, B.W. & RADCLIFFE, L. (1917)
The fishes of the west coast of Peru and the Titicaca Basin. Bulletin of the United States National Museum, 95: 166 pp., 14 pls
NORMAN, J.R. (1937)
Coast fishes. Part II. The Patagonian region. Discovery Reports, 16: 1–150, figs 1–76., pls 1–5
BEEBE, W. & TEE-VAN, J. (1941)
Eastern Pacific expeditions of the New York Zoological Society. XXVIII. Fishes from the tropical eastern Pacific. [From Cedros Island, Lower California, south to the Galápagos Islands and northern Peru.] Part 3. Rays, Mantas and Chimaeras. Zoologica, Scientific Contributions of the New York Zoological Society, 26 (3): 245–280, Pls. 1–4.
HILDEBRAND, S.F. (1946)
A descriptive catalog of the shore fishes of Peru. Bulletin of the United States National Museum, 189: 530 pp
ORCES, V.G. (1952)
Observaciones sobre los elasmobranquios del Ecuador. Revista de Biología Marina y Oceanografía, 5 (2): 85–110
MCEACHRAN, J.D. (1982)
Revision of the South American skate genus Sympterygia (Elasmobranchii: Rajiformes). Copeia, 1982 (4): 867–890
MANTILLA, L. (1998)
Lista de especies elasmobranquios de Colombia. Rev. Fen. Anat. Vol I.