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(Redirected from Dentary)
|Mandible. Outer surface. Side view|
|Mandible. Inner surface. Side view|
|Gray's||subject #44 172|
|Precursor||1st branchial arch|
In bony fish the lower jaw is made of a number of bones, but these were gradually reduced in evolution.
In mammals bones formerly in the lower jaw have become the ear ossicles.