Classification of the order Tillodontia
Subor. †Tillodontia Marsh 1875 [tillodont]
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G. †Azygonyx Gingerich 1989
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†Azygonyx ancylion Gingerich and Gunnell 1979
†Azygonyx grangeri Simpson 1937
†Azygonyx latidens Simpson 1937
†Azygonyx xenicus Gingerich and Gunnell 1979
G. †Basalina Dehm and Oettingen-Spielberg 1958
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†Basalina basalensis Dehm and Oettingen-Spielberg 1958
Fm. †Esthonychidae Cope 1883
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Subfm. †Esthonychinae Zittel and Schlosser 1911
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G. †Esthonyx Cope 1874
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†Esthonyx acutidens Cope 1881
†Esthonyx bisulcatus Cope 1874
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Invalid names: Esthonyx acer Cope 1874 [synonym], Esthonyx burmeisterii Cope 1874 [synonym]
†Esthonyx gunnelli Gingerich 1989
†Esthonyx munieri Lemoine 1891
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Invalid names: Franchaius russellonyx Baudry 1992 [synonym], Plesiesthonyx chardini Baudry 1992 [synonym], Plesiesthonyx elongatus Baudry 1992 [synonym]
†Esthonyx spatularius Cope 1880
G. †Plesiesthonyx Lemoine 1891
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†Plesiesthonyx luciae Baudry 1992
†Plesiesthonyx minimus Baudry 1992
Invalid names: Franchaius Baudry 1992 [synonym]
Subfm. †Trogosinae Gazin 1953
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G. †Trogosus Leidy 1871
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†Trogosus castoridens Leidy 1871
†Trogosus gazini Miyata 2007
†Trogosus grangeri Gazin 1953
†Trogosus hillsii Gazin 1953
†Trogosus hyracoides Marsh 1873
†Trogosus latidens Marsh 1874
†Trogosus shantunensis Chow 1963
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Invalid names: Kuanchuanius danjiangensis Cheng and Ma 1990 [synonym]
Invalid names: Tillotherium Marsh 1873 [synonym]
Invalid names: Anchippodus Leidy 1868 [nomen dubium]
Invalid names: Anchippodontidae Gill 1872 [synonym], Tillotheriidae Marsh 1875 [synonym]
Fm. †Yuesthonychidae Tong et al. 2003
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