Classification of Dineley and Metcalf 1999

Ph. Chordata Haeckel 1874
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Subph. Cephalochordata Haeckel 1866 [lancelet]
Subph. Tunicata Lamarck 1816 [tunicate]
Subph. Vertebrata Lamarck 1801 [vertebrate]
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Cl. Agnatha Cope 1889 [jawless fish]
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Subcl. †Anaspida Traquair
Subcl. †Conodonta [conodont]
Subcl. Myxinoidea [hagfish]
Subcl. †Pteraspidomorphi Goodrich 1909 [jawless fish]
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Or. †Heterostraci Lankester 1868
Or. †Thelodonti Jaekel 1911
Supercl. Gnathostomata Gegenbauer 1874 [jawed fish]
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Cl. †Acanthodii Owen 1846 [spiny fish]
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Or. †Acanthodiformes Berg 1940
Or. †Climatiiformes Berg 1940
Or. †Ischnacanthiformes Berg 1940
Cl. Chondrichthyes Huxley 1880 [cartilaginous fish]
Cl. Osteichthyes Huxley 1880 [bony fish]
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Unr. Sarcopterygii Romer 1955 [lobe-finned fish]
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Infracl. Actinistia Cope 1870
Infracl. Dipnoiformes Cloutier 1990
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Or. Dipnoi Müller 1884 [lungfish]
Infracl. Rhipidistia Cope 1887
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Or. †Osteolepiformes Berg 1937
Or. †Porolepiformes Jarvik 1942
Or. †Rhizodontiformes Andrews and Westoll 1970
Invalid names: Panderichthyida Vorobyeva 1989 [empty]
Cl. †Placodermi M'Coy 1848 [armour-plated fish]
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Or. †Acanthothoraci Stensiö 1944
Or. †Antiarchi Cope 1885
Or. †Arthrodira Woodward 1891
Subor. †Petalichthyida Jaekel 1911
Subor. †Phyllolepida Stensiö 1934
Or. †Pseudopetalichthyida Denison 1975
Or. †Ptyctodontida Gross 1932
Or. †Stensioellida Romer 1945