Hexatrygonidae — šestižábrovcovití

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Hexatrygon Heemstra & Smith, 1980 »
Heemstra P. C. & Smith M. M. 1980. Hexatrygonidae, a new family of stingrays (Myliobatiformes: Batoidea) from South Africa, with comments on the classification of batoid fishes. Ichthyol. Bull. J. L. B. Smith Inst. Ichthyol. No. 43. 1-17.