Middle ear to sounds of higher frequency, because these are better taken up by the inner ear (which also responds to higher frequencies than those of non-mammals). The malleus, or "hammer", evolved from the articular bone of the lower jaw, and the incus, or "anvil", from the quadrate. In other vertebrates, these bones form the primary jaw joint, but the expansion of the dentary bone in mammals led to the evolution of an entirely new jaw joint, freeing up the old joint to become part of the ear. For a period of time, both jaw joints existed together, one medially and one
The Broken Ear The Broken Ear The Broken Ear (, originally published in English as Tintin and the Broken Ear) is the sixth volume of "The Adventures of Tintin", the comics series by Belgian cartoonist Hergé. Commissioned by the conservative Belgian newspaper for its children's supplement , it was serialised weekly from December 1935 to February 1937. The story tells of young Belgian reporter Tintin and his dog Snowy, who pursue the thieves of a South American fetish identifiable by its broken ear. In doing so, he ends up in the fictional nation of San Theodoros, where he becomes embroiled in a war