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
Anvil of Doom Anvil of Doom Anvil of Doom was a death metal band from Andalusia, Spain, active since 1999 and currently disbanded. After three years of line-up changes, Anvil of Doom really started their serious career in 2002. Their demo "Died Before Dawn" led them to sign a deal with Spanish Metal label Xtreem Music. Throughout 2003, they worked on new material for their first album while improving their live presence, playing through all Andalusia with local bands, even sharing the stage with Spanish legends Barón Rojo, Soziedad Alkoholika, and Avulsed. They also took part in the Xtreem Music Festival in Madrid,