Classification of the family Isognomonidae

Subfm. Isognomoninae Woodring 1925
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G. †Bathyisognomon Hickman 2023
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G. Crenatula Lamarck 1803
G. †Gervilleioperna Krumbeck 1923
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Subg. †Gervilleioperna (Gervilleignoma) Aberhan and von Hillebrandt 1996
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†Gervilleioperna (Gervilleignoma) aurita Aberhan and von Hillebrandt 1996
†Gervilleioperna timorensis Krumbeck 1923
G. Isognomon Lightfoot 1786
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†Isognomon (Hippochaeta) hataii Noda and Furuichi 1972
Subg. †Isognomon (Iranognomon) Repin 2008
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Subg. Isognomon (Isognomon) Lightfoot 1786
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†Isognomon (Isognomon) panzana Loel and Corey 1932
Subg. Isognomon (Melina) Philipsson 1788
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Subg. Isognomon (Parviperna) Iredale 1939
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Subg. †Isognomon (Semignomon) Repin 2013
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Isognomon alatus Gmelin 1791
Isognomon bicolor Adams 1845
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Invalid names: Perna chemnitziana d'Orbigny 1853 [synonym]
†Isognomon gariesensis Kensley and Pether 1986
†Isognomon gaudichaudi d'Orbigny 1842
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Invalid names: Perna chilensis Conrad 1855 [synonym]
†Isognomon isognomoides Stahl 1824
†Isognomon isognomon Linnaeus 1758
†Isognomon legumen Gmelin 1790
†Isognomon maxillata Lamarck 1819
†Isognomon nucleus Lamarck 1819
†Isognomon orientalis Hamlin 1884
Isognomon perna Linnaeus 1767
†Isognomon quadrisulcata Ihering 1897
Isognomon radiatus Anton 1838
†Isognomon repini Hautmann 2001
†Isognomon valvanoi Rossi de Garcia and Levy 1977
Invalid names: Aviculoperna [synonym]
G. †Leproconcha Giebel 1856
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†Leproconcha paradoxa Giebel 1856
G. †Lithiotis Gümbel 1871
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†Lithiotis problematica Gümbel 1871
†Lithiotis timorensis Krumbeck 1923
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†Isognomon (Mytiloperna) bathonica Morris and Lycett 1853
†Mytiloperna charlottensis Aberhan 1998
Subfm. Pernariinae Rafinesque 1815
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G. Pernaria Rafinesque 1815
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Invalid names: Perna Bruguière 1789 [replaced]
G. †Yunshanoperna Chen 1984
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Invalid names: Crenatulinae Gray 1854 [empty], Melininae Meek and Hayden 1865 [empty], Pedalionidae Stephenson 1923 [synonym], Pernidae Bohm 1926 [synonym]