Fishes
   Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838
     Order Carchariniformes Compagno, 1973 see Order Carcharhiniformes Compagno, 1973
       Family Triakidae Gray, 1851 - houndsharks
         Subfamily Triakinae Gray, 1851
           01 Genus Allomycter Guitart, 1972
           02 Genus Cazon de Buen, 1959 see Subgenus Cazon {de Buen, 1959}
           03 Genus Cynias Gill, 1903
           04 Genus Emissola Jarocki, 1822
           05 Genus Galeus Leach, 1818
           06 Genus Galeus Garman, 1913
           07 Genus Murmille Setna & Sarangdhar, 1946
           08 Genus Mustellus Fischer von Waldheim, 1813
           09 Genus Mustellus Risso, 1827
           10 Genus Mustelus Valmont de Bomare, 1768, nom. inval.
           11 Genus Mustelus Linck, 1790 - smoothhounds
           12 Genus Mustelus Cuvier, 1816
           13 Genus Myrmillo Gistel, 1848
           14 Genus Pleuracromylon Gill, 1864