In fact the mandibles are if proéminantes in the males of the Lucane kite.
At the Reptile S, the mandible is made of five bones.
The four other bones were reduced in the face and were incorporated in the Oreille. In this reduced form, they are known like the hammer or malleus and the anvil or incus ; with oldest clamp or pillars , they are the ossicles. This adaptation is advantageous, not only because only one bone is more solid but also because the hammer and the anvil improve the Ouïe.
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