Some bones, primarily formed separately in subcutaneous tissues, include headgears (such as bony core of horns, antlers, ossicones), osteoderm, and os penis/os clitoris. A deer's antlers are composed of bone which is an unusual example of bone being outside the skin of the animal once the velvet is shed.
some bones primarily formed separately in subcutaneous tissues include headgears (such as bony core of horns antlers ossicones) osteoderm and os penis/os clitoris a deer's antlers are composed of bone which is an unusual example of bone bein,g outside the? skin of the animal once the velvet is shed