Table 1.

Definitions of the landmarks and their allocation to beak and braincase blocks

Number	Definition	Block
1	Beak tip	Beak
2	Midpoint of craniofacial hinge	Braincase
3	Maximum of curvature at the rostral end of the Fossa et Fenestra antorbitalis	Beak
4	Maximum of curvature at the lateral intersection of the Processus maxillaries and the jugal	Beak
5	Most posterior point of the Os palatinum	Braincase
6	Maximum of curvature at the rostral end of the external nares	Beak
7	Maximum of curvature at the caudal end of the external nares	Beak
8	Maximum of curvature at the posterior site of the Os palatinum	Braincase
9	Joint point between palatine and pterygoid	Braincase
10	Tip of the process of interior Os palatin	Braincase
11	Maximum of curvature at the anterior site of the Os palatinum	Braincase
12	Maximum of curvature at the outer Os palatinum	Braincase
13	Most caudal point of ventral central line on beak	Beak
14	Inner junction of palatine and premaxilla	Beak
15	Outer junction of palatine and premaxilla	Beak
16	Most dorsolateral point of the Os lacrimale	Braincase
17	Most distal point of the process of postorbital bone	Braincase
18	Maximum of curvature at the edge of Foramen magnum	Braincase
19	Tip of the process at anterior edge of Foramen magnum	Braincase
20	Most posterior point of the foramen magnum	Braincase
21	Ostium canalis ophthalmici externi	Braincase
22	Foramen n. maxillomandibularis	Braincase