dermal bone


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dermal bone

[¦dər·məl ′bōn]
(anatomy)
A type of bone that ossifies directly from membrane without a cartilaginous predecessor; occurs only in the skull and shoulder region. Also known as investing bone; membrane bone.
References in periodicals archive ?
At this point in the evolutionary process, the palatoquadrate was completely fused with the chondrocranium to form a true autostylic jaw suspension, and it was covered almost entirely by dermal bone.
What we call the skull in humans was formed from a combination of the primitive brain case (chondrocranium), the sensory capsules and their underlying supports, components of the visceral skeleton (gill arches and their derivatives), and the overlying dermal bones (dermatocranium).