quadrate bone造句

• The bones of the mandible and quadrate bones can also pick up ground borne vibrations.
• The articulation between the articular and quadrate bones at the jaw joint is well developed.
• According to Kellner, the original describers had incorrectly identified a coracoid as a quadrate bone.
• The articular and quadrate bones evolved to become two of the middle-ear bones in mammals.
• There is also a straight or somewhat curved muscle scar on the medial surface of the quadrate bone.
• They also possess movable quadrate bones, making it possible to move the upper jaw relative to the neurocranium.
• Mammalian jaw structures are also set apart by the dentary-squamosal cranium called the quadrate bone to form the articular-quadrate jaw joint.
• One theory is that in mammals, the articular bone has migrated to the middle ear to become the malleus, while the quadrate bone becomes the incus.
• "Europelta " is distinguished from other ankylosaurs by the following diagnostic traits : Its quadrate bone is shorter and mediolaterally wider than in any other ankylosaur.
• Protorosaurs also have a gap between the quadrate bones and the jugal bones in the back of the skull near the jaw joint, making their skulls resemble those of lizards.
• There is currently controversy about whether or not to classify " Morganucodon " as a mammal or as a non-mammalian articular and quadrate bones in all modern mammalian groups.
• In 2015 Christophe Hendrickx and colleagues found it unlikely that " Nemegtomaia " and other oviraptords had bird-like kinesis in their skulls, due to the quadrate bone being immobile.
• Aside from the dentary, only few other bones of the primitive lower jaw remain in mammals; the former articular and quadrate bones survive as the malleus and the incus of the middle ear.
• Its precise relationships are not all too clear; the quadrate bone is unique in some respects but apparently shares more apomorphies with the family Hesperornithidae-the " typical " Hesperornithes-in cladistic analysis.
• As a result of this, the primitive jaw articulation, between the articular and quadrate bones, has been lost, and replaced with an entirely new articulation between the mandible and the temporal bone.
• More to behind, the lower jugal bones and quadrate bones flare out sidewards, so that the skull is much wider at its rear lower edges than at the top surface, resulting in a trapezium-shaped profile in posterior view.
• The left and right sides of the lower jaw are joined only by a flexible ligament at the anterior tips, allowing them to separate widely, while the posterior end of the lower jaw bones articulate with a quadrate bone, allowing further mobility.
• Originally considered to be an early mammal, it is now classified as a Mammaliamorph ( nearly a mammal ) because " Oligokyphus " does not have the mammalian jaw attachments and it retains a vestigial joint between the quadrate bone and the squamosal bone in the skull.
• Roughly contemporary specimens were described from the Haranoyan-Tozawan boundary in Japan & ndash; a complete right quadrate bone ( MFM 28351 ) found in the Oi Formation at Misato, Mie, and some additional material of about the same age from the Mizunami Group at Mizunami, Gifu.
• Allokotosauria is most notably characterized by wrinkled side surface of orbital border of the frontal bone, expanded and hooked quadrate bone head on the posterior side, and a prominent tubercle developed above to the glenoid fossa of the scapula, although there are other unambiguous traits that differentiate it from other early archosauromorphs.