part of part of overlaps overlaps orbit of skull neurocranium intramembranous bone sphenoid region olfactory region parasphenoid os parasphenoidale os sphenoideum relationship loss: part_of braincase and otic capsule skeleton (AAO:0000052)[AAO] Azygous, dermal bone of intramembranous origin that underlies the ventral surface of the braincase in anurans and salamanders. In caecilians, the parasphenoid and other bones are fused to form the Os basale.[AAO] ZFA:0000561 TAO:0000561 relationship loss: overlaps parasphenoid-pterosphenoid joint (TAO:0002217)[TAO] parabasale UBERON:0004745 A tooth- or denticle-covered plate which is attached to the sphenoid stem[Palaeos]. AAO:0000385 Dermal bone that forms part of the base of the skull and the lateral walls of the braincase through its ascending processes. It may articulate with the vomer anteriorly, the prootics and exoccipitals laterally, and the basioccipital posteriorly. The parasphenoid is an elongate median bone.[TAO] keilbein relationship loss: overlaps parasphenoid-basioccipital joint (TAO:0001832)[TAO] neurocranium bone palate bone palatal part of dermatocranium