Classification of Troxell 1921
G. †Hyracodon Leidy 1856
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†Hyracodon leidyanus Troxell 1921
†Hyracodon major Scott and Osborn 1887
†Hyracodon nebrascensis Leidy 1850
†Hyracodon selenidens Troxell 1921
Classification of Troxell 1921