Parietal bone of Ox are placed on the posterior and lateral aspects of the cranium.
They are fused to each other and with the inter-parietal and squamous part of occipital before birth.
Each is made up of a posterior part and a lateral part.
The posterior parts of the two sides form the posterior wall of the temporal fossa.
The junction of the two parts is marked by a prominent parietal crest which is continuous with the temporal crest below and with the frontal crest anteriorly.
The frontal sinus extends into the parietals.
Horse
They are located on the dorsal aspect of the skull and form the roof of the cranium.
The external parietal crest is median in position above but bifurcates below to join the frontal crest on either side.
The internal face presents along its internal border, inter-parietal crest.
The posterior border meets the occipital and curves inward and with the temporal forms the parieto-temporal canal. It is not excavated to form frontal sinus.
Dog
It is rhomboid in outline and is located as in the horse.
It is extensive and form the greater part of the roof of the cranial cavity.
Fowl
It is situated on the posterior part of the skull and forms part of the roof of the cranium.
It is included between the supra-occipital, frontal and temporal.
