Ptycholepiformes

• Order †Ptycholepidiformes Andrews et al. 1967
• * Family incertae sedis
• ** Genus †Ardoreosomus Romano et al., 2019
• *** †Ardoreosomus occidentalis Romano et al., 2019
• * Family †Boreosomidae Gardiner 1967
• ** Genus †Mesembroniscus Wade, 1935
• *** †Mesembroniscus longisquamosus Wade, 1935
• ** Genus †Boreosomus Stensiö 1921
• *** †Boreosomus arcticus
• *** †Boreosomus gillioti
• *** †Boreosomus piveteaui Stensiö, 1921
• *** †Boreosomus reuterskioeldi Stensiö, 1921
• *** †Boreosomus scaber Stensiö, 1921
• * Family †Chungkingichthyidae Su 1974
• ** Genus †Chungkingichthys Su, 1974
• *** †Chungkingichthys tachuensis Su, 1974
• * Family †Ptycholepididae Brough, 1939 corrig.
• ** Genus †Yuchoulepis Su, 1974
• *** †Yuchoulepis gansuensis Su, 1993
• *** †Yuchoulepis szechuanensis Su, 1974
• ** Genus †Ptycholepis Agassiz, 1832 non Gray 1842 ex Richardson, 1843
• *** †Ptycholepis barboi Bassani, 1886
• *** †Ptycholepis bollensis Agassiz, 1833
• *** †Ptycholepis calloviensis Kaznyshkin, 1990
• *** †Ptycholepis curta Egerton, 1854
• *** †Ptycholepis gracilis Davis, 1884
• *** †Ptycholepis magna Bürgin, 1992
• *** †Ptycholepis marshii Newberry, 1878
• *** †Ptycholepis monilifer Woodward, 1895
• *** †Ptycholepis prisca Bürgin, 1992
• *** †Ptycholepis schaefferi Bürgin, 1992