Perissodactyla

• Metazoa? - (superphylum)
  • Chordata - (phylum)
    • Vertebrata? - (subphylum)
      • Mammalia - (class)
        • Theria? - (subclass)
          • Eutheria? - (metaclass)
            • Perissodactyla - (order)

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 :

• Equidae (Horse)
• Tapiridae? (tapir?)
• Rhinocerotidae? (rhinoceros?)