Fig. 54.–Diagrams of skulls, showing especially the composition of the bony arches of the orbito-temporal region.
A, C, D, E, Theromorpha. A, Elginia, p. [305]; C, Cynognathus, p. [306]; D, Gordonia, p. [310]; E, Dicynodon, p. [310].
B, G, Prosauria. B, Sphenodon, p. [294]; G, Palaeohatteria, p. [291].
F, Crocodilia, p. [434].
H, I, K, Chelonia, p. [316]. H, Chelydra, p. [338]; I, Chrysemys, p. [346]; K, Cistudo, p. [361].
E, Epiotic; F, frontal; IT, infratemporal fossa; J, jugal, shaded vertically; L, lacrymal; M, maxillary; N, nasal groove; Na, nasal bone; O, orbit; P, parietal; Po, postorbital, dotted; Pf, post-frontal; Pm, premaxillary; Pr, prefrontal; Ptg, pterygoid; Q, quadrate; Qj, quadrato-jugal; So, supra-occipital; Sq, squamosal, shaded obliquely; St (in B-E), supratemporal fossa; St (in A), Supratemporal bone.
Fig. 55.–Diagrams of skulls, showing especially the composition of the bony arches of the orbito-temporal region.
L, Pythonomorpha. Clidastes, p. [490].