Noun
A division of ungulate mammals, including those that have an odd number of toes, as the horse, tapir, and rhinoceros; -- opposed to Artiodactyla.
Source: Webster's dictionaryHe still used subordination terms (rhinos, horses, tapirs), while Perissodactyla stood as a designation for the entire order, including the hyrax. Source: Internet
Evolution Uintatherium anceps Cladogram showing relations within Ungulata Perissodactyla and Artiodactyla include the majority of large land mammals. Source: Internet
Mesaxonia is now considered synonymous to Perissodactyla. Source: Internet