Glabella is a flat field between the eyebrows, on the lower part of the metopic suture

3. Points of Orientation on the skull:

Gnathion is a median point on the tip of the chin of the lower jaw

Nasion is a median point on the fronto-nasal suture

Glabella is a flat field between the eyebrows, on the lower part of the metopic suture

Ophryon is located over Glabella

Pterion is the joining point of the frontal bone, the sphenoid bone, the temporal bone and the parietal bone

Asterion is the joining point of the occipital bone, the parietal bone and the temporal bone

Bregma  is the meeting point of the sagital suture and the coronal suture

Lambda is the meeting point of the sagital suture and the lambdoid suture

Inion is at the external occipital protuberance and is a more or less obvious bulge at the back of the skull

Opisthion is a median point at the posterior rim of the foramen magnum

Basion is a median point at the anterior rim of the foramen magnum