Classification of the species Lophiodon pumilus
†Orohippus pumilus Marsh 1871
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Invalid names: Helotherium procyoninum Cope 1871 [synonym], Hyracotherium osbornianum Cope 1883 [synonym], Lophiotherium ballardi Marsh 1871 [synonym], Oligotomus cinctus Cope 1873 [synonym], Orohippus atavus Granger 1908 [synonym], Orohippus typicus Granger 1908 [synonym]