Classification of Young 2010
Cl. †Placodermi M'Coy 1848 [armour-plated fish]
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Or. †Acanthothoraci Stensiö 1944
Or. †Antiarcha Cope 1885
Or. †Arthrodira Woodward 1891
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Subor. †Actinolepida Miles 1973
Subor. †Brachythoraci Gross 1932
Invalid names: Phylctaeniida [empty]
Subor. †Petalichthyida Jaekel 1911
Or. †Phyllolepida Stensiö 1934
Or. †Pseudopetalichthyida Denison 1975
Or. †Ptyctodontida Gross 1932
Or. †Rhenanida Broili 1930
Or. †Stensioellida Romer 1945