Třída: Chondrichthyes - paryby
Řád: Carcharhiniformes - žralouni
Čeleď: Scyliorhinidae - máčkovití

Reference: Goode, G. B. & T. H. Bean. 1896. Oceanic ichthyology, a treatise on the deep-sea and pelagic fishes of the world, based chiefly upon the collections made by the steamers Blake, Albatross, and Fish Hawk in the northwestern Atlantic, with an atlas containing 417 figures. Spec. Bull. U. S. Natl. Museum No. 2: Text: i-xxxv + 1-26 + 1-553, Atlas: i-xxiii, 1-26, 123 pls.