1 — Basilar part; 2 — Pharyngeal tubercle; 3 — Occipital condyle; 4 — Inferior nuchal line; 5 — Superior nuchal line; 6 — External occipital protuberance; 7 — Highest nuchal line; 8 — External occipital crest; 9 — Condylar canal; 10 — Foramen magnum; 11 — Hypoglossal canal; 12 — Squamous part of occipital bone; 13 — Jugular process; 14 — Groove for transverse sinus; 15 — Cruciform eminence; 16 — Groove for
superior sagittal sinus