bone,
os a shade of white the color of bleached bones
skull the bony skeleton of the head of vertebrates
asterion the craniometric point at the junction of the lamboid suture and the occipitomastoid suture and the parietomastoid suture
stephanion the craniometric point on the coronal suture above the acoustic meatus
ethmoid,
ethmoid bone one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity