ANIMAL KINGDOM
- Metazoa? - (superphylum)
- Chordata - (phylum)
- Vertebrata? - (subphylum)
Perissodactyla is an order in the animal taxonomy.
It comprises about 15 species of ungulates - odd-hoofed, herbivorous
mammals.
In the early days of history of mammals they were numerous but now
only three, of the original twelve, families remain :