Classification of the species Hyopotamus guyotianus
†Agriochoerus guyotianus Cope 1878
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Invalid names: Agriochoerus bullatus Thorpe 1921 [synonym], Agriochoerus trifrons Cope 1884 [synonym], Coloreodon ferox Cope 1879 [synonym], Coloreodon macrocephalus Cope 1879 [synonym], Coloreodon ryderanus Cope 1881 [synonym]