MCCOURT, R.M. & KERSTITCH, A.N. (1980)
Mating behavior and sexual dimorphism in dentition in the stingray Urolophus concentricus from the Gulf of California. Copeia, 1980 (4): 900–901
MIYAKE, T. & MCEACHRAN, J.D. (1991)
The morphology and evolution of the ventral gill arch skeleton in batoid fishes (Chondrichthyes: Batoidea). Zoological Journal of the Linnean Society, 102 (1): 75–100
DOI: 10.1111/j.1096-3642.1991.tb01537.x
MIYAKE, T. & MCEACHRAN, J.D. & HALL, B.K. (1992)
Edgeworth's legacy of cranial muscle development with an analysis of muscles in the ventral gill arch region of batoid fishes (Chondrichthyes: Batoidea). Journal of Morphology, 212 (3): 213–256
DOI: 10.1002/jmor.1052120304
MIYAKE, T. & MCEACHRAN, J.D. & WALTON, P.J. & HALL, B.K. (1992)
Development and morphology of rostral cartilages in batoid fishes (Chondrichthyes: Batoidea), with comments on homology within vertebrates. Biological Journal of the Linnean Society, 46: 259–298
DOI: 10.1111/j.1095-8312.1992.tb00864.x
MARTIN, A.P. (1995)
Mitochondrial DNA sequence evolution in sharks: rates, patterns and phylogenetic inferences. Molecular Biology and Evolution, 12 (6): 1114–1123
MOULD, B. (1997)
Classification of the recent Elasmobranchii. Copyright Brian Mould 1997