Scaly bone


July 5, 2022

Scaled bone (Latin squamosum) - the bone found in the posterior region of the skull of tetrapods. In the early days, the tetrapoda was part of the temporal region of the cutaneous roof of the skull, and in birds and mammals - the skull. In mammals, it is articulated with the dental bone, forming the upper part of the temporomandibular joint, and is the posterior part of the zygomatic arch, which ends in the front with the zygomatic bone. In advanced viviparous mammals, the scale bone is in front of the rock bone and forms part of the side of the brain cup, while in all other mammals it is located behind the rock bone and does not form the side of the brain cup. In many mammals, it forms the temporal bone along with the auditory canal, eardrum and ossicles.