Of or pertaining to the bone tissue inside root of the cranium often creating an integral part of the occipital into the adult but generally distinct in young
- Of or with respect to the bone within the base of the cranium, usually developing an integral part of the occipital in the adult, but often distinct within the young.
- The basioccipital bone tissue.
(a.) Of or related to the bone tissue within the foot of the cranium, regularly forming a part of the occipital inside adult, but frequently distinct in the youthful.
- (n.) The basioccipital bone tissue.
The mouth is usually more or less protractile and always toothless; the lower pharyngeal bones, which are large and falciform, subparallel to the branchial arches, are provided with teeth, often large and highly specialized, in one, two or three series (pharyngeal teeth), usually working against a horny plate attached to a vertical process of the basioccipital bone produced under the anterior vertebrae, mastication being performed in the gullet.