14 WILLIAM K. GREGORY 
Fig. 11 Under view of skull of Gomphognathus minor. (Broom P.Z.S., 1911. 
p. 911, text-fig. 177) 
The inferior branch of the alisphenoid covers the region of the basipterygoid processes of the basi- 
sphenoid. It is external to the supposed carotid canal and is continuous with the pterygoid [Watson]. 
and in the adult skull of Sphenodon (fig. 12). There the bones 
usually called epipterygoids have close topographic similarities 
to the alisphenoids of mammals, Cynodonts, crocodiles and Dino- 
saurs: viz., they are lateral to the basisphenoid and pituitary 
fossa, anterior to the prodtics, inferior to the parietals, anterior 
to the proétic foramen (for the trigeminus), and fill the gap 
between the true orbitosphenoid and the prodtics. They differ 
from the alisphenoid of crocodiles and Dinosaurs in retaining 
their ancient connection below with the pterygoids (as do also 
the ‘epipterygoids’ of the Permian Pelycosaurs, as well as the 
alisphenoids of Cynodonts). Their cartilage fundaments (fig. 13) 
