Final answer:
The foramen lacerum, which has ragged edges, is located lateral to the basioccipital, and is completely filled with cartilage in a living being.
Step-by-step explanation:
The foramen located lateral to the basioccipital is called the foramen lacerum. This irregular opening in the base of the skull is found immediately inferior to the exit of the carotid canal. However, it's important to note that during life, the foramen lacerum is completely filled with cartilage and thus does not actually allow for the passage of nerves or blood vessels. The edges of this foramen are described as ragged, hence its name 'lacerum' which means 'ragged' or 'torn'. Notably, the foramen lacerum is distinct from the foramen spinosum, which is located posterior-lateral to the foramen ovale and serves as the entry point for an important artery that supplies the coverings of the brain.