Classification of the family Praecardiidae
Fm. †Praecardiidae Hoernes 1884
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Subfm. †Cardiolinae Fischer 1886
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G. †Opisthocoelus Beushausen 1895
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†Lunulicardium (Opisthocoelus) transversale Clarke 1904
†Opisthocoelus ausavensis Steininger 1853
†Opisthocoelus concentricus Beushausen 1895
Subfm. †Dexiobiinae Newell and LaRocque 1969
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G. †Oracardia Herrick 1888
G. †Kralovna Barrande 1881
G. †Manulicula Kríž 1967
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. †Vetupraeca Nagel-Myers et al. 2008
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†Vetupraeca clymeniae Beushausen 1895
†Vetupraeca duplicata Münster 1840
†Vetupraeca melletes Clarke 1904
Invalid names: Deltacardium Nägel 2006 [replaced]
Invalid names: Neklaniidae Scarlato and Starobogatov 1979 [synonym], Pararcidae Ulrich 1894 [synonym]