| 1. Fontanelle: (0) Opened ; (1) Closed |
| 2. Nasal septum: (0) Not formed; (1) In formation. |
| 3. Individualization of the alveoli: (0) Not formed; (1) Developing; (2) Formed. |
| 4. Nasal bone: (0) Not sutured; (1) Sutured |
| 5. Squamoparietal suture: (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 6. Frontoparietal suture: (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 7. Parietosupraoccipital suture: (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 8. Parietal/exoccipital suture: (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 9. Supraoccipital/exoccipital suture (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 10. Pterygopalatine suture (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 11. Maxillopalatine suture (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 12. Vomerobasioccipital suture (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 13. Basioccipital-pterygoid suture (0) Not fused; (1) fusion is not apparent on the external surface of the skull; (2) partial fusion apparent on the external surface of the skull; (3) complete fusion. |
| 14. Asymmetry in the position of the two foramina of the maxilla in a more anterior position (0) Symmetrical; (1) Left foramen in a more anterior position; (2) Right foramen in a more anterior position. |
| 15. Asymmetry in the position of the two premaxillary foramina: (0) Symmetrical; (1) Left foramen in a more anterior position; (2) Right foramen in a more anterior position. |
| 16. Number of small foramina in the maxilla, anterior to the most anterior of the three large foramina. |
| 17. Number of foramina of the maxilla after the anterior line of the external nasal opening and perpendicular to the skull axis. |
| 18. Dorsal development of the mesethmoid ridge on the anterior edge of the nasal opening between the angles of the premaxillae. (0) Elevation of the ossified portion until the mesethmoid, or until the height of the dorsal sufaces of the maxillae; (1) Without elevations. |
| 19. Composition of the antorbital process in its lateral left view: (0) Lacrimal; (1) Lacrimal and frontal; (2) Lacrimal and maxillary |
| 20. Medial occipital crest, elevating at the average height of the occipital region (0) Present; (1) Absent. |
| 21. Accessory foramen to the Foramen Magnum: (0) Present; (1) Absent. |
| 22. Evidence of a notch on the superior border of the Foramen Magnum: (0) Present; (1) Absent. |
| 23. Number of fenestras associated with the condyles, close to the Foramen Magnum. |
| 24. Shape of the vomer between the posterior processes of the pterygoid: (0) Inverted calyx; (1) Intermediate; (2) Parallel. |
| 25. Anterior contact between the pterygoids: (0) Contactless (separed by a distance > 1.0 mm); (1) With contact |
| 26. Posterior contact between the pterygoids: (0) Contactless (separed by a distance > 1.0 mm); (1) With contact |
| 27. Shape of the extremity of the hamular process of the pterygoid (left): (0) y > x; (1) x > y. |
| 28. Shape of the anterior lacerate foramen (right): (0) Opened or extended; (1) With a spine-shaped projection; (2) Narrow. |
| 29. Hypoglossal foramen below the basioccipital fossa (visible ventrally) (0) Present; (1) Absent. |
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