A dermal bone or membrane bone is a bony structure derived from intramembranous ossification forming components of the vertebrate skeleton including the skull, jaws, gills, fins and exoskeleton (of tortoises and turtles). In contrast to endochondral bone, dermal bone does not form from cartilage that then calcifies. Dermal bone is formed within th...
A dermal bone is a bone that forms within an organism's skin. These bones function as protective armor. 
A bone formed by ossification of the cutis. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. a bone formed by ossification of the cutis.