Superphylum Deuterostomia Grobben, 1908 - deuterostomes
see Infrakingdom Deuterostomia Grobben, 1908
Phylum Chordata Bateson, 1885 - chordates
Subphylum Craniata auct.
see Subphylum Vertebrata Cuvier, 1812
Vertebrata (Lamarck, 1801) - vertebrates
see Subphylum Vertebrata Cuvier, 1812
Myopterygii - myopterygians
Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
Grade Chondrichthiomorphi
Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
1 [plesion] Genus †Plesioselachus Anderson, Long, Gess & Hiller, 1999
2 Order †Squatinactiformes Zangerl, 1981, incertae sedis [monotypic]
3 Order †Protacrodontiformes incertae sedis
4 Infraclass †Cladoselachimorpha
5 Infraclass †Xenacanthimorpha
6 Infraclass Euselachii Hay, 1902 - sharks and rays, and related fossils