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The basilar part of the occipital bone (also basioccipital) extends forward and upward from the foramen magnum, and presents in front an area more or less quadrilateral in outline. In the young skull, this area is rough and uneven, and is joined to the body of the sphenoid by a plate of cartilage.
From its front to the back is the basilar part, also called the basioccipital, at the sides of the foramen magnum are the lateral parts, also called the exoccipitals, and the back is named as the squamous part. The basilar part is a thick, somewhat quadrilateral piece in front of the foramen magnum and directed towards the pharynx. The squamous ...
The singular basioccipital is the rear lower part of the braincase, below the foramen magnum. It is homologous to the basilar part of the occipital bone. In the ancestral tetrapod, the basioccipital makes up most of a large central knob-like surface, the occipital condyle, which articulates with the vertebrae as a ball-and-socket joint. This ...
The basicranium is the floor of the braincase, and formed by the basioccipital, basisphenoid, and parasphenoid. [19] basisphenoid The basisphenoid bone forms the front part of the floor of the braincase. Not visible from the outside in an articulated skull, it is fused to the basioccipital at the rear and to the parasphenoid at the front.
A combination of a number of smaller bones (such as the basioccipital and exoccipitals) participate in the formation of this structure. In most dinosaurs, the occipital condyle is situated at the rear part of the skull, below the foramen magnum, and points toward the posterior of the animal.
The most anterior part of the cranium includes a forward plate of cartilage, the rostrum, and capsules to enclose the olfactory organs. Behind these are the orbits, and then an additional pair of capsules enclosing the structure of the inner ear .
The white visible part of a tooth is called the crown. The rounded upper projections of the back teeth are cusps. The hard white exterior covering of the tooth is the enamel. As the tooth tapers below the gumline, the neck is formed. Below the neck, holding the tooth into the bone, is the root of the tooth.
The hind area of the basilar part of occipital bone (basioccipital area) is convex. The position of the condylar canal and muscle arrangements of the basioccipital area of Diplobune are different from Anoplotherium and Dacrytherium. The postglenoid process is bulky and projects down compared to the two anoplotheriid genera.