Quadrate Bone Function in reptiles
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The quadrate bone is a skull bone in most tetrapods, including amphibians, sauropsids (reptiles, birds), and early synapsids. In most tetrapods, the quadrate...
Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise...
prearticular bones have fused to form the compound bone. The mandible is suspended from the quadrate bone and articulates at this compound bone. In most tetrapods...
the quadrate and pterygoid bones. The squamosal is bordered anteroventrally by the jugal and ventrally by the quadratojugal. In reptiles, the quadrate and...
of the bones of the jaw structure (the articular bone of the lower jaw, and quadrate) were reduced in size and incorporated into the ear, while many others...
Squamata (redirect from Scaled reptiles)scales or shields, and must periodically engage in molting. They also possess movable quadrate bones, making possible movement of the upper jaw relative...
evolved from skull bones present in most tetrapods, including the reptilian lineage. The reptilian quadrate bone, articular bone, and columella evolved...- also connects to the quadrate bone which forms the cranium's contribution to the jaw joint. Early in their evolution, diapsid reptiles evolved a lower temporal...
Mandible (redirect from Dentary bone)remaining bone in the lower jaw – the mandible. As a result of this, the primitive jaw articulation, between the articular and quadrate bones, has been...
Reptiles arose about 320 million years ago during the Carboniferous period. Reptiles, in the traditional sense of the term, are defined as animals that...- Ossicles (redirect from Middle ear bone complex)columella, quadrate, articular, and angular structures in the amphibian, bird or reptile jaw. As sound waves vibrate the tympanic membrane (eardrum), it in turn...
Middle ear (section Function)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...- Cranial kinesis (section Modern reptiles)known to exhibit streptostyly, and their quadrate bone moves even after death. Different groups of reptiles exhibit varying degrees of cranial kinesis...
articular, makes a connection with a bone of the cranium called the quadrate bone to form the articular-quadrate jaw joint. In forms transitional to mammals...
Mosasaurus (redirect from Mosasaurus Conybeare in Parkinson, 1822)various bones, particularly in the rear portions of the skull and neck, and a tooth from another M. conodon piercing through the quadrate bone. No injuries...
Dimetrodon (redirect from Fin-backed Reptile)"mammal-like reptiles", but now known as stem mammals. This groups Dimetrodon together with mammals in the clade Synapsida, while reptiles are placed in a separate...
Columella (auditory system) (category Reptile anatomy)quadrate bone of the jaw. Thus, snakes are able to detect and localize ground vibrations through the lower jaw, rather than the sides of the head. In...
Ceratosaurus (category All Wikipedia articles written in American English)In 1925, Janensch named a new species of Ceratosaurus, C. roechlingi, based on fragmentary remains from the quarry "Mw" encompassing a quadrate bone,...
Kelenken (category Fossil taxa described in 2007)the eye sockets, skull roof, braincase, and left quadrate bone preserved, while most of the palatal bones behind the eye sockets are missing. The specimen...
Evolution of mammals (redirect from Evolution of the digestive system in mammals)lower jaw bone, which carries the teeth) and the squamosal (another small skull bone). In the Jurassic, their quadrate and articular bones evolved into...
- SKULL OF REPTILES External Appearance, Excrescences, and Chief Openings The skull of reptiles, as of other vertebrates, has undergone many changes in adaptation
- representatives in Europe : I. No transverse (ectopterygoid) bone ; pterygoid not extending to quadrate or mandible ; no supratemporal ; nasals in contact with