Dentary Bone

Dentary Bone

 

(1) The bone that forms each half of the mandible in man and mammals; in other vertebrates, the anterior element of the secondary jaw. The teeth are usually located on the dentary bone (hence the name). In some animals the teeth on the dentary bone are reduced (in a number of caudate amphibians, tortoises, birds, and monotremate mammals); in lungfish, the dentary bone itself is reduced.

(2) [In Russian], the name sometimes given to the tissue that makes up the principal mass of the tooth, dentin.

References in periodicals archive ?
George (2012) also identified several synapomorphic characters of the dentary bone for the tribe Notiosoricini.
The mental foramen is present in the dentary bone below the anterior portion of m1.
On the basis of detailed comparisons with living species of the genus Oligosarcus, the fossil material is well nested within the species that show a large number of teeth in the second series of the dentary bone.
The changes ill the anatomy of the jaws that took place as mammal-like reptiles evolved into mammals were characterized by an increase in the size of the temporalis muscle and the dentary bone and a reduction in the size of the postdentary bones (i.
These are the maxillary, premaxillary and dentary bones.
In the two males, teeth on the rostromedial vomerine tooth ridges appeared more hypertrophied than either teeth on the caudolateral vomerine ridges or on the maxillary, premaxillary, and dentary bones [ILLUSTRATION FOR FIGURE 3A, B OMITTED].
The top group represents pairs in which the premaxilla, maxilla, and dentary bones are advanced; the second group represents characters in which other bones are advanced; the third group represents characters in which other skeletal structures are advanced; and the final group represents those characters in which muscles are advanced.
in association with the rostrum, a small fragment of one of the dentary bones with one or more cheek teeth is accreted onto the palate and is mostly covered in matrix, obscuring the contained lower teeth as well as some maxillary teeth.