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In anatomy, the zygomatic arch, or cheek bone, is a part of the skull formed by the zygomatic process of the temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic bone (the side of the cheekbone), the two being united by an oblique suture (the zygomaticotemporal suture); [1] the tendon of the temporal muscle ...
The first lower premolar was canine-like. Compared to some of its later relatives, Interatherium and Protypotherium, Argyrohyrax had a moderately expanded zygomatic arch; its radius had a slightly concave distal articular surface, and the articulation between its ulna and its humerus was less concave and more vertical.
In the human skull, the zygomatic bone (from Ancient Greek: ζῠγόν, romanized: zugón, lit. 'yoke'), also called cheekbone or malar bone, is a paired irregular bone, situated at the upper and lateral part of the face and forming part of the lateral wall and floor of the orbit, of the temporal fossa and the infratemporal fossa.
It had large canine teeth, and heavy molars, suggesting a diet of relatively tough food, such as seeds and savannah grasses. [ 7 ] Similarities to orangutans in what are chiefly jaw and partial skull fossils are a concave face with large zygomatic arch bones, narrow setting of eyes from each other, smoothness of nasal floor, and central incisor ...
Squamosal: the squama including the zygomatic process; Tympanic bone: the tympanic part: this is derived from the angular bone of the reptilian lower jaw; Periotic bone: the petrous and mastoid parts; Two parts of the hyoid arch: the styloid process. In the dog these small bones are called tympanohyal (upper) and stylohyal (lower).
Zygomatic process of maxilla from the maxilla; Zygomatic process of temporal bone from the temporal bone; The term zygomatic derives from Greek ζύγωμα (zúgōma) 'yoke'. The zygomatic process is occasionally referred to as the zygoma, but this term usually refers to the zygomatic bone or occasionally the zygomatic arch.
The canine teeth are usually large, conical, thick and stress resistant. ... The skulls are heavily built with a strong zygomatic arch. Often a sagittal crest is ...
The postorbital bar (or postorbital bone) is a bony arched structure that connects the frontal bone of the skull to the zygomatic arch, which runs laterally around the eye socket. It is a trait that only occurs in mammalian taxa, such as most strepsirrhine primates [1] and the hyrax, [2] while haplorhine primates have evolved fully enclosed ...