Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. combination inorganic/organic material
7. combination inorganic/organic animal material
8. [bone and bone components materials]
9. bone (material)
10. [bone by form as material]
11. [tooth and tooth components as materials]
12. [tooth components as material]
13. dentin (material)

Narrower term/s

• mammoth ivory
• walrus ivory
• whale ivory
• elephant ivory

Anotations

Scope note:

The modified form of dentin derived from animal teeth. The most common example is from the tusks of mature elephants; similar material is obtained from any tusked or large-toothed mammal such as a walrus or narwhal.