Latest Quadrate bone Stories
Fossil from China suggests mammalian ear of monotremes evolved separately from that of marsupials and placentals Paleontologists from the American Museum of Natural History and the Chinese Academy of Sciences announce the discovery of Liaoconodon hui, a complete fossil mammal from the Mesozoic found in China that includes the long-sought transitional middle ear. The specimen shows the bones associated with hearing in mammals"” the malleus, incus, and ectotympanic"” decoupled from the...
Latest Quadrate bone Reference Libraries
The incus (anvil) bone is an anvil-shaped small bone in the middle ear. It connects the malleus to the stapes. This bone was first described by Alessandro Achillini of Bologna. This bone also transmits sound vibrations from the malleus to the stapes. The incus bone is only found in mammals. The bone, which is derived from a reptilian upper jaw bone (the quadrate bone), embryologically derives from the first pharyngeal arch along with the rest of the bones of mastication, such as the...
