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 End of an Ear The End of an Ear The End of an Ear is the debut solo album by Soft Machine's Robert Wyatt. The album was recorded in August 1970, while taking a break from Soft Machine (which he would eventually exit the following year). Containing mostly free jazz and experimental music, with no lyrics (only vocal experimentation by Wyatt), it is an unusual album. It includes Soft Machine's Elton Dean on saxophone and Caravan's David Sinclair on organ, who in 1971 would join Wyatt in the group Matching Mole. About half of the album is filled by a two-part cover of Gil