The base of skull is the most inferior area of the skull, composed of the endocranium and lower parts of the skull roof.
Comment:
The skull base is formed from a series of cartilages either side of, and rostral to, the notochord, whose tip lies just caudal to the pituitary gland. It is closely associated with the sensory capsules, which partially or completely sur- round the olfactory epithelium, the eye, and the inner ear[PMID:11523816]