Its head is rather large, with a truncated snout as long as the sizeable orbit; the upper jaw is hooked, with small premaxillae. The mandibular symphysis is very long, exceeding the maximum diameter of the orbit in width. On the hind part of the head, the skin is divided into moderately large shields. The skull lacks a temporal arch and has the frontal bone extended to form a considerable part of the orbit. Seen from above, the prootic extends towards the front. The jugal does not contact the small laterally emarginated and medially constricted pterygoid process, the bones being separated by the maxilla and a gap. The triturating (chewing) surface of the upper jaw is long and narrow, more than four times as long as it is wide. The lower temporal fossa is large and strongly , providing an attachment for the massive chewing muscle.