96 



Annals of the South African Museum. 



On the right-hand side of the jaw lying in the groove in the 

 dentary is a small piece of a bone which may be the displaced 

 coronoid. 



The suture between the surangular and articular is not seen ; but 

 those between the angular and surangular and angular and pre- 

 articular are well displayed. The surangular forms most of the 

 upper border of the fossa, and lies within the dentary and angular. 

 Its upper edge forms a thickened ridge. The inner flange of the 

 articular is very pronounced. 



FIG. 14. Sketch of odontoid and axis of Kannemeyeria erithrea. x 



. Associated with the skull and lower jaw were a 

 number of vertebrae, which seem to form a continuous series of 

 20 vertebrae from the odontoid backwards. 



The odontoid is the only portion of the atlas preserved. It is 

 of the usual trefoil shape with a height of 65 mm. and a maximum 

 width of 62 mm. Its anterior face is strongly convex. In the 

 centre of the front face is a small aperture which coincided with 

 the small pit at the end of the occipital condyle. The upper surface 

 is strongly concave for the floor of the neural canal. There is no 

 intercentrum between the odontoid and the axis. The atlantal arch 

 is not preserved. It rested, apparently, almost wholly on the 

 odontoid, and articulated behind with the axial prezygapophyses 

 and in front, probably, with the processes of the exoccipitals seen 

 on either side the foramen magnum. 



