Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. biological components
7. animal components

Anotations

Scope note:

Stiff, projecting oral structures of certain animals, including some invertebrates (e.g., cephalopods and some insects), some fishes and mammals, all birds and turtles, and many dinosaurs. Many beaked animals, including all modern birds and turtles, lack teeth.