Classification of Ponomarenko 2014
Fm. Cupedidae Laporte 1836 [reticulated beetle]
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Fm. Trachypachidae Thomson 1857 [false ground beetle]
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Subfm. †Eodromeinae Ponomarenko 1977
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Fm. Gyrinidae Latreille 1810 [whirligig beetle]
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Subor. Polyphaga Emery 1886
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G. †Hydrobiites Heer 1864
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†Hydrobiites minor Ponomarenko 2014
†Hydrobiites mongolicus Ponomarenko 2014
G. †Platycrossos Dunstan 1923
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†Platycrossos latus Ponomarenko 2014
†Platycrossos longus Ponomarenko 2014
†Platycrossos loxonicus Ponomarenko 2014
†Platycrossos mongolicus Ponomarenko 2014
†Platycrossos ovum Ponomarenko 2014
Fm. †Schizophoridae Ponomarenko 1968
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Fm. †Coptoclavidae Ponomarenko 1961
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Subfm. †Coptoclaviscinae Soriano et al. 2007
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Subfm. †Timarchopsinae Wang et al. 2010
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Fm. †Permosynidae Tillyard 1924
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G. †Artematopodites Ponomarenko 1990
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†Artematopodites latissimus Ponomarenko 2014
Fm. Helophoridae Leach 1815
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G. Helophorus Fabricius 1775
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Subg. †Helophorus (Mesosperchus) Ponomarenko 1977
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†Helophorus (Mesosperchus) costalis Ponomarenko 2014