Norma basilaris
| Term name | Layer | |
|---|---|---|
| 1 | Foramen magnum | Layer 1 |
| 2 | Jugular foramen | Layer 1 |
| 3 | Foramen ovale | Layer 1 |
| 4 | Pharyngeal tubercle | Layer 1 |
| 5 | Foramen lacerum | Layer 1 |
| 6 | Stylomastoid foramen | Layer 1 |
| 7 | Mastoid process | Layer 1 |
| 8 | Carotid canal | Layer 1 |
| 9 | Petro-occipital fissure | Layer 1 |
| 10 | Petrosphenoidal fissure; sphenopetrosal fissure | Layer 1 |
| 11 | Asterion | Layer 1 |
| 12 | Occiput | Layer 1 |
| 13 | Gonion | Layer 1 |
| 14 | Opisthion | Layer 1 |
| 15 | Basion | Layer 1 |
| 16 | Gnathion | Layer 1 |