Classification of Chkhikvadze 2000
Unr. Trionychia
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Fm. Trionychidae Gray 1825 [softshell turtle]
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G. †Crassithecachelys Chkhikvadze 2000
G. †Eugenechelys Chkhikvadze 2000
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†Eugenechelys allani Gilmore 1923
†Eugenechelys splendidus Hay 1908
G. †Hummelichelys Chkhikvadze 2000
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†Hummelichelys annae Zangerl 1944
†Hummelichelys beecheri Hay 1904
†Hummelichelys ellipticus Hay 1908
†Hummelichelys foveatus Leidy 1856
†Hummelichelys grangeri Hay 1908
†Hummelichelys guttatus Leidy 1869
†Hummelichelys quadratus Gilmore 1919
†Hummelichelys reesidei Gilmore 1919
†Hummelichelys sagatus Hay 1908
†Hummelichelys subquadratus Lambe 1914
†Hummelichelys vegetus Gilmore 1919
G. †Paleotrionyx Schmidt 1945
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†Paleotrionyx puercensis Hay 1908
†Paleotrionyx quinni Schmidt 1945
†Paleotrionyx singularis Hay 1907
Invalid names: Conchochelys Hay 1905 [synonym]
Invalid names: Rafetini Chkhikvadze 2000 [empty]