122 US Jal, JEBIES) 
Posterior palatine foramina small, wholly enclosed by palatines 
and transverses. Presphenoidal opening small, cordiform. Teeth 
thirty-six on each side of upper jaw, two foremost larger and much 
elongated. 
Mandible presenting high surangular crest and short posterior 
extension. Inner face bearing a strong, subrectangular process 
which springs from posterior extremity and extends anteriorly par- 
allel to the ramus. Jaw rather slender, pierced by external and 
internal fenestrae and by small internal mandibular foramen. 
Ilium bearing on outer face three strong ridges meeting in a high 
central knob above acetabulum. Posterior extremity continued in 
long process. Inner surface quite smooth except for long shallow 
trench for reception of sacrum, and two ill-defined ridges which 
bound it. 
The skull is quite broad in the occipital region and narrows grad- 
ually to the region of the nares. A short distance in front of these 
the roof slopes downward and merges into the snout, which com- 
prises about one-half the length of the entire skull. The snout is 
depressed and in cross-section its width is greater than its height. 
At the anterior extremity it is enlarged and somewhat deflected down- 
ward, and bears two large teeth on each side. 
Viewed from the side the skull appears rather depressed, as its 
elevation is about one-half its greatest width. It presents a fairly 
even crest-line from its posterior margin to a position somewhat in 
front of the middle of the antorbital vacuities, where it begins to rise 
to the elevation upon which the nares open. From the nares the 
slope downward to the snout is rapid. 
In the side view nearly all the external openings of the skull are 
visible—the anterior, excavated portion of the nares, the antorbital 
vacuity, the orbit itself, the lateral temporal vacuity, the quadrate 
foramen, and the opening of the otic capsule together with the small 
notch immediately beneath it. Only the supra-temporal vacuity 
and the deep median notch remain concealed. The skull is thus 
given quite a light, open appearance and has a much less massive 
aspect than some of the related belodonts, especially B. kapfji— 
or Phytosaurus kapffi, to follow McGregor—although this contrast 
is rendered more forcible by the slender snout of the specimen in 
