78 
Annals of the Transvaal Museum 
Skull. 
A large part of a left maxillary and the front end of probably the left ramus 
of the lower jaw are present. The length of the lower maxillary border as pre- 
served is about 29 mm. It bears six teeth or remnants of teeth and in front 
of the foremost one is the crown-tip of another one, which was probably also 
on the maxillary. Behind these six the rock only shows a brown blur and 
nothing definite can be made out. The hinder end of the alveolar border is 
only indicated. The front end of the 
maxillary and the greater part of the 
front border of its nasal process are 
covered by the coracoid. The anterior 
lower corner of the antorbital vacuity 
is rounded and wide-angled. A portion 
of the inner wing of the nasal process 
is still present. 
The lower jaw portion is very much 
damaged and sutures cannot be made 
out. It shows three teeth and fragments 
of four others. Its lengthis about 2 5 mm. 
It seems as if the maxillary teeth 
slightly increase in size forwards. The 
four preserved tips of the dentary teeth 
occur at the same level and these four 
teeth were therefore probably of equal length. The roots of the two foremost 
ones have been partially laid open and a small replacing tooth is seen in front 
of the first one. Another young tooth, which is still below the edge of the sup- 
posed dentary, was laid bare through removal of part of the bone and the root 
of the fourth tooth present. The crowns of the teeth are broad and flat and 
have the edges serrated. They are not pointed but rounded at the top and on 
one side at least there is a low broad ridge, which runs from the base along 
the middle to the upper edge. The denticles of the serrated edge have a blunt 
point, and the notches are angular. This angle appears to be very large, in 
some cases where the notch is clearly visible it shows an angle of some 6o°. 
In young teeth, however, the condition seems to be different. The young tooth 
below the root of the fourth one shows a portion of its edge with four small 
denticles. In a lateral view these denticles are long and cylindrical, and before 
being well cleaned of matrix the notches seemed to have the shape of a long 
stretched U. After the matrix had been carefully removed, however, it ap- 
peared that the denticles are united to such an extent that only their tips are 
free. The actual notch is slight and nearly rectangular, but continues on to 
the tooth surface as a parallel concavity between the denticles for about three 
times its real depth. Length of the crown of the best preserved maxillary 
tooth 5 mm., breadth 3*5 mm. In this tooth three denticles occupy the space 
of 1 mm. The crown of the young tooth has a length of 3*5 mm. and its four 
denticles stand on 1*3 mm. 
Cervical Vertebrae. 
All the cervical vertebrae have been crushed sideways into a heap. They 
have been very much flattened and broken and only three are sufficiently free 
from the others to be of any use. Two of these are very long and their place 
seems to be in the hinder region of the neck. The length of the centra of both 
is 31 mm. The ventral surface of one centrum is exposed and the breadth of 

Fig. 1. Portion of maxillary and dentary 
with teeth as preserved. Nat. size. 
