Classification of the subphylum Craniiformea

Subph. Craniiformea Popov et al. 1993
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Cl. Craniata Williams et al. 1996
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Or. Craniida Waagen 1885
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Superfm. †Cranioidea Menke 1828
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Fm. †Craniidae Menke 1828
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G. †Acanthocrania Williams 1943
G. †Ancistrocrania Dall 1877
G. †Celidocrania Zhu and Xue 1985
G. †Conocrania Smirnova 1996
G. Crania Retzius 1781
G. †Craniscus Dall 1871
G. †Danocrania Rosenkrantz 1964
G. †Deliella Halamski 2004
G. †Isocrania Jaekel 1902
G. †Lepidocrania Cooper and Grant 1974
G. †Mesocrania Smirnova 1997
G. †Nematocrania Grant 1976
G. Neocrania Lee and Brunton 2001
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Invalid names: Orbicula d'Archiac 1843 [replaced]
G. †Orthisocrania Rowell 1963
G. †Petrocrania Raymond 1910
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Invalid names: Craniella Oehlert 1911 [replaced], Philhedrella Kozlowski 1929 [synonym]
G. †Philhedra Koken 1889
G. †Pseudocrania M'Coy 1851
G. †Venetocrania Bitner and Dieni 2005
G. †Westralicrania Cockbain 1967
G. †Xenocrania Chen and Rong 2019
Invalid names: Craniacea Menke 1828 [empty]
Or. Craniopsida Gorjansky and Popov 1985
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Superfm. †Craniopsioidea Williams 1963
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Fm. †Craniopsidae Williams 1963
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G. †Craniops Hall 1859
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Invalid names: Pholidops Hall 1859 [synonym]
G. †Discinopsis Hall and Clarke 1892
G. †Lingulapholis Schuchert 1913
G. †Paracraniops Williams 1963
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Invalid names: Sanxiaella [synonym]
G. †Wrightiops Popov and Cocks 2014
Invalid names: Craniopsoidea Williams 1963 [empty]
G. †Melbournopterus Caster and Kjellesvig-Waering 1953
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†Melbournopterus crossotus Caster and Kjellesvig-Waering 1953
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G. †Adenus
Superfm. †Trimerelloidea Davidson and King 1872
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Fm. †Adensuidae Popov and Rukavishnikova 1986
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G. †Adensu Popov and Rukavishnikova 1986
Fm. †Trimerellidae Davidson and King 1872
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G. †Costitrimerella Rong and Li 1993
G. †Dinobolus Hall 1871
G. †Eodinobolus Rowell 1963
G. †Fengzuella Li and Han 1980
G. †Gasconsia Northrop 1939
G. †Gyroselenella Li 1985
G. †Monomerella Billings 1872
G. †Obolellina Billings 1871
G. †Ovidiella Nikitin and Popov 1984
G. †Palaeotrimerella Li and Han 1980
G. †Paradinobolus Li and Han 1980
G. †Peritrimerella Liang 1983
G. †Rhynobolus Hall 1871
G. †Sinotrimerella Li and Han 1980
G. †Trimerella Billings 1862
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Invalid names: Machaerocolella Li and Han 1980 [synonym], Prosoponella Li 1984 [synonym]
G. †Yidurella Zeng 1987
Fm. †Ussuniidae Nikitin and Popov 1984
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G. †Ussunia Nikitin and Popov 1984
Invalid names: Patella ottomana Kittl 1903 [nomen dubium]