Classification of Fisher 1962
Unr. Metazoa Haeckel 1874
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Cl. †Calyptoptomatida Fisher 1962
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Or. †Camerothecida Syssoiev 1957
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Or. †Hyolithida Mathew 1962
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Subor. †Hyolithina Mathew 1899
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Fm. †Orthothecidae Syssoiev 1957
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G. †Bactrotheca Novak 1891
G. †Circotheca Syssoiev 1958
G. †Cryptocaris Barrande 1872
G. †Lentitheca Sysoyev 1958
G. †Orthotheca Novak 1886
G. †Quadrotheca Sysoyev 1958
G. †Semielliptotheca Syssoiev 1958
G. †Trapezotheca Syssoiev 1958
Fm. †Sulcavitidae Syssoiev 1958
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G. †Ambrolinevitus Syssoiev 1958
G. †Dorsolinevitus Syssoiev 1958
G. †Linevitus Syssoiev 1958
G. †Sulcavitus Syssoiev 1958
G. †Trapezovitus Syssoiev 1958
Invalid names: Matthevina Fisher 1962 [empty]
G. †Kygmaeoceras Flower 1954
G. †Pharetrella Hall 1888
G. †Phragmotheca Barrande 1867
G. †Quinquelithes Syssoiev 1958
Ph. †Problematica Andrews 1970
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G. †Biconulites de Chardin 1931
Fm. †Coleolidae Fisher 1962
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G. †Coleoloides Walcott 1890
G. †Coleolus Hall 1879
G. †Coleoprion Sandberger 1847
G. †Paoshanella Yin 1937
G. †Polylopia Clark 1952
G. †Salopiella Cobbold 1921
G. †Spirodentalium Walcott 1890
Fm. †Cornulitidae Fischer 1962
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G. †Conchicolites Nicholson 1872
G. †Cornulitella Howell 1952
G. †Cornulites Schlotheim 1820
G. †Kolihaia Prantl 1944
G. †Lapworthella Cobbold 1921
G. †Stenothecopsis Cobbold 1935
Or. †Hyolithelminthes Fischer 1962
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Fm. †Hyolithellidae Walcott 1886
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G. †Barella Herdström 1930
G. †Discinella Hall 1871
G. †Hyolithellus Billings 1872
G. †Mobergella Herdström 1923
Fm. †Torellellidae Holm 1893
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G. †Pseudorthotheca Cobbold 1935
G. †Rushtonia Cobbold and Pocock 1934
G. †Torellella Holm 1893
Fm. †Hyolithidae Nicholson 1889
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G. †Carinolithes Sysoev 1958
G. †Helenia Walcott 1890
G. †Hyolithes d'Eichwald 1840
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Invalid names: Hyolithis d'Eichwald 1840 [misspelling], Hyolithus d'Eichwald 1840 [misspelling]