dermal bone defined in 1951 yeardermal bone - dermal bone (membrane bone);
dermal bone - Bone arising near surface of embryo (though it may later sink deeper) from concentration of mesenchyme cells, with no cartilage precursor (See also: Cartilage Bone). Occurs in skull and shoulder-girdle of most vertebrates, e.g. roofing bones of skull; dentary; clavicle. In some very early vertebrates it formed extensive superficial armour, e.g. Ostracodermi.
near dermal bone in Knolik
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