Table 1.

List of landmarks used for the morphospace analyses depicted in Fig. 3, follow the reference [27]

9-landmarks in skull roof configuration
1,7	Anteriormost point of the premaxilla
2,6	Widest point of the skull
3,5	Posteriormost point of the skull
4	End of the skull in middleline
8	Anteromedial point of nasals (end of the beak in the middle line in birds)
9	Posteromedial point of nasals (the cranio-facial hinge in the middle line in birds)