Family † Parasemionotidae Stensiö 1931

†Ospiidae Stensiö in Koch 1931: 74 (family) † Ospia Stensiö 1932 [no valid type genus, not available, Art. 11.7.1.1]

†Bronghiidae [†Broughiidae] Koch 1931: 88 (family)? † Broughia Stensiö 1932 [no valid type genus, not available, Art. 11.7.1.1]

† Parasemionotidae Stensiö in Koch 1931: 74 (family) † Parasemionotus Piveteau 1929 [type genus inferred from the stem; name only, but used as valid by Stensiö 1932a: 97, 183, by Gardiner 1960: 333, by Griffith & Patterson 1963: 33, by Romer 1966: 354, by Andrews et al. 1967: 652, by Fowler 1971c: 403 and by Gardiner 1993b: 618 Art. 13.2.1]

†Ospiidae Stensiö 1932a: 97, 183 (family) † Ospia Stensiö 1932

† Tungusichthyidae Berg 1940: 406 (family) † Tungusichthys Berg 1941 [no valid type genus, not available, Art. 11.7.1.1]

† Tungusichthyidae Berg 1941: 462 (family) † Tungusichthys Berg 1941

† Promecosominidae Wade 1941a: 380 (family) † Promecosomina Wade 1935

† Paracentrophoridae Gardiner 1960: 347 (family) † Paracentrophorus Piveteau 1941