Classification of D'Elía 2003

Superfm. Muroidea Illiger 1811 [mouse]
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Fm. Cricetidae Fischer von Waldheim 1817
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Subfm. Sigmodontinae Wagner 1843
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G. Abrothrix Thomas 1916
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Invalid names: Chroeomys Thomas 1916 [synonym]
Tr. Akodontini Vorontzov 1959
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G. Akodon Meyen 1833 [akodont]
G. Bibimys Massoia 1979
G. Blarinomys Thomas 1896
G. Brucepattersonius Hershkovitz 1998
G. Deltamys Thomas 1917
G. Juscelinomys Moojen 1965
G. Kunsia Hershkovitz 1966 [giant rat]
G. Lenoxus Thomas 1909
G. Necromys Ameghino 1889
G. Oxymycterus Waterhouse 1837 [hocicudo]
G. Scapteromys Waterhouse 1837 [swamp rat]
G. Thalpomys Thomas 1916
G. Thaptomys Thomas 1916
G. Chelemys Thomas 1903
G. Delomys Thomas 1917
G. Euneomys Coues 1874
G. Geoxus Thomas 1919
G. Irenomys Thomas 1919
G. Juliomys González 2000
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G. Oecomys Thomas 1906
G. Oryzomys Baird 1857 [rice rat]
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G. Auliscomys Osgood 1915
G. Calomys Waterhouse 1837 [vesper mouse]
G. †Eligmodontia Cuvier 1837
G. Graomys Thomas 1916
G. Loxodontomys Osgood 1947
G. Phyllotis Waterhouse 1837
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G. Reithrodon Waterhouse 1837 [bunny rat]
G. Rhipidomys Tschudi 1844 [climbing mouse]
G. Scolomys Anthony 1924
Tr. Sigmodontini Wagner 1843
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G. †Prosigmodon Jacobs and Lindsay 1981
G. Sigmodon Say and Ord 1825 [cotton rat]
G. Thomasomys Coues 1884
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G. †Cholomys Reig 1980
G. Wiedomys Hershkovitz 1959
Invalid names: Thomasomyini [invalid subgroup]