overlaps develops from OBO_REL:part_of (UNDECLARED) basioccipital Chondral bone that articulates with the exoccipitals dorsally, the prootics anteriorly, the parasphenoid ventrally, and the first free vertebra posteriorly. The basioccipital forms the floor of the foramen magnum. The basioccipital is an unpaired medial bone. In some teleosts the anterior vertebral centra fuse to the basioccipital forming a monopartite occipital condyle. TAO:0000472 basinial (French) basinioste (French) basioccipital (French) teleost_anatomy occipital region parachordal cartilage chondrocranium neurocranium parasphenoid-basioccipital joint basioccipital-exoccipital joint endochondral bone