Classification of the order Petromyzontiformes

Or. Petromyzontiformes Berg 1940 [lamprey]
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G. †Euphanerops Woodward 1900
G. †Mayomyzon Bardack and Zangerl 1968
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Mayomyzon pieckoensis Bardack and Zangerl 1968
G. †Mesomyzon Chang et al. 2006
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Mesomyzon mengae Chang et al. 2006
Fm. Petromyzontidae [lamprey]
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G. Agnathomyzon Gracianov 1906
G. Bathymyzon Gill 1883
G. Caspiomyzon Berg 1906
G. Entosphenus Gill 1862
G. Eudontomyzon Regan 1911
G. Haploglossa Gracianov 1906
G. Ichthyomyzon Girard 1859
G. Lampetra Gray 1851
G. Lampreda Rafinesque 1815
G. Lethenteron Creaser and Hubbs 1922
G. Oceanomyzon Fowler 1908
G. Okkelbergia Creaser and Hubbs 1922
G. Petromyzon Linnaeus 1758
G. Pricus Rafinesque 1815
G. Reighardina Creaser and Hubbs 1922
G. Scolecosoma Girard 1859
G. Tetrapleurodon Creaser and Hubbs 1922
G. †Priscomyzon Gess et al. 2006
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Priscomyzon riniensis Gess et al. 2006
Invalid names: Hyperoartii [synonym]