Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Chordata (phylum)
8. Vertebrata (subphylum)
9. Mammalia (class)

Anotations

Scope note:

In former classifications, referred to a major division of Mammalia comprising all hoofed mammals, which are now divided into the orders Perissodactyla (odd-toed ungulates) and Artiodactyla (even-toed ungulates).