|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Perissodactyla - Equidae
It was synonymized subjectively with Eohippus by Granger (1908), Matthew (1909), Hay (1930) and Stirton (1940); it was synonymized subjectively with Hyracotherium by Kitts (1956), Robinson (1966), Schiebout (1974) and Gingerich (1991).
It was assigned to Hyracotheriinae by Hay (1902); and to Equidae by Wortman (1896), Prothero and Schoch (1989), Froehlich (1999) and Froehlich (2002).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.