Classification of López et al. 2010
Or. †Notoungulata Roth 1903 [notoungulate]
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Subor. †Toxodontia Ameghino 1887
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Fm. †Notohippidae Ameghino 1894
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G. †Eomorphippus Ameghino 1901
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†Eomorphippus obscurus Ameghino 1901
†Eomorphippus pascuali Simpson 1967
G. †Patagonhippus López et al. 2010
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†Patagonhippus canterensis López et al. 2010
†Patagonhippus dukei López et al. 2010
Fm. †Toxodontidae Ameghino 1889
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Invalid names: Morphippus corrugatus Ameghino 1899 [nomen dubium], Morphippus quadrilobus Ameghino 1901 [nomen dubium]
†Rhynchippus equinus Ameghino 1897
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Invalid names: Morphippus complicatus Ameghino 1897 [synonym], Morphippus fraternus Ameghino 1901 [synonym], Morphippus hypselodus Ameghino 1897 [synonym]