Classification of the family Praecardiidae

Fm. †Praecardiidae Hoernes 1884
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G. †Buchiola Barrande 1881
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Subg. †Buchiola (Buchiola) Barrande 1881
Subg. †Buchiola (Megabuchiola) Grimm 1998
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Subfm. †Cardiolinae Fischer 1886
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G. †Euthydesma Hall 1885
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Euthydesma beyrichi Holzapfel 1882
Euthydesma subtextile Hall 1843
G. †Opisthocoelus Beushausen 1895
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Opisthocoelus ausavensis Steininger 1853
Opisthocoelus concentricus Beushausen 1895
Subfm. †Dexiobiinae Newell and LaRocque 1969
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G. †Dexiobia Winchell 1863
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Dexiobia varicostata Branson 1938
Dexiobia whitei Winchell 1863
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Invalid names: Dexiobia ovata Hall 1858 [replaced]
G. †Oracardia Herrick 1888
G. †Fentounia Liu 1983
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G. †Kralovna Barrande 1881
G. †Manulicula Kríž 1967
G. †Mucopraeca Nagel-Myers et al. 2008
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Mucopraeca multicostata Clarke 1904
Subfm. †Praecardiinae Hörnes 1884
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G. †Gibbopleura Barrande 1881
G. †Glyptocardia Hall 1885
G. †Pantata Barrande 1881
G. †Paraptyx Clarke 1904
G. †Pararca Hall 1885
G. †Praelima Barrande 1881
G. †Praecardium Barrande 1881
G. †Pseudocostatoria Sinitsyna 1986
G. †Telycardia Kříž 2005
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Telycardia malinka Kříž 2005
G. †Tewoella Ding and Li 1987
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Tewoella xiawunaensis Ding and Li 1987
G. †Vetupraeca Nagel-Myers et al. 2008
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Vetupraeca clymeniae Beushausen 1895
Vetupraeca duplicata Münster 1840
Vetupraeca melletes Clarke 1904
Vetupraeca vetusta Hall 1843
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Invalid names: Cardiola nehdensis Kayser 1873 [synonym]
Invalid names: Deltacardium Nägel 2006 [replaced]
Invalid names: Neklaniidae Scarlato and Starobogatov 1979 [synonym], Pararcidae Ulrich 1894 [synonym]