Basisphenoid

Palatal view of the skull of Plateosaurus. Basisphenoid is labeled as bs.

The basisphenoid is a bone in the skull of vertebrates. It is an unpaired midline element that forms part of the posterior and ventral margin of the braincase; it is typically located anterior to the basioccipital and posterior to the parasphenoid. It ossifies endochondrally and makes up a part of the chondrocranium. The parasphenoid contains the sella turcica, which houses the pituitary gland.

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