theriosuchus

from The Century Dictionary.

• noun An extinct genus of crocodiles of the family Goniopholidæ, characterized by having the supratemporal vacuities smaller than the orbits, teeth irregular and tumid, and a short mandibular symphysis. The dorsal scutes overlap, and are also united at their outer margins by peg-and-socket articulations. The ventral scutes are polygonal and united by sutures only. The total length is less than 0.5 meter, and the general form approaches that of modern crocodiles. It is found in the Purbeckian beds of Dorsetshire.