dentary
/ˈdɛnt(ə)ri
/noun (plural dentaries) Zoology
The anterior bone of the lower jaw which bears the teeth. In mammals it forms the whole of the lower jaw (or mandible).Associated remains found with this skeleton consist of acid - etched vertebrae and a fragmentary dentary from juvenile hadrosaur dinosaurs....
- During mammalian evolution, the lower jaw became just one bone, the dentary, with the articular no longer attached to the lower jaw.
- Mammals are unique among extant vertebrates in possessing a lower jaw formed by a single bony element, the dentary.
Origin
Mid 19th century: from late Latin dentarius, from Latin dens, dent- 'tooth'.
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