This bone appears to represent both the coracoid and the clavicle, being formed partly of cartilage bone, partly of membrane bone.
The clavicle is usually regarded as a membrane bone which may become to some extent cartilaginous.
The mode of ossification is nevertheless in many respects intermediate between that of a true cartilage bone and a membrane bone.
The cranium is covered with membrane bone, and teeth are but slightly developed.
The nasal capsules are large and quite unossified though they are overlain by membrane bone.
Thus the greater part of the neural arches is formed of membrane bone.
These are roofed over to a greater or less extent by the development of membrane bone.
The perichondrium thus becomes the periosteum, and the bone produced by it, is periosteal or membrane bone.
It remains to a considerable extent cartilaginous, but is partly converted into cartilage bone, partly sheathed in membrane bone.
In Bony Ganoids both cartilage bone and membrane bone is well developed.
membrane bone n.
A bone developed within the membrane of a connective tissue.