Fauna and Stratigraphy of the Stormberg Series. 



353 



is concave. The posterior surface is concave in the middle, but its 

 border slopes away to the edges of the surface so that its outer half 

 is convex. There is thus a large surface for articulation with the 

 haemapophysis below the concave portion of the posterior face of 

 the centrum. The neural canal is circular in cross-section. The 

 transverse processes rise high up and pass outwards, slightly upwards 

 and slightly backwards. They are long, narrow, and thin. The 

 zygapophyses diverge from each other strongly. The prezygapophyses 

 have Hat upper faces which look inwards. The neural spine is high 



/-I 



Fig. 14. Sphenosuchus acutus, Htn. 

 Internal view of left scapula, x 1. 



and thin, narrower and higher than is usual in the Dinosauria or 

 Crocodilia. Its base is broader posteriorly than anteriorly, and lies 

 wholly in the hinder two-thirds of the neural arch. The width 

 across the transverse processes is 30 mm.; that across the prezyga- 

 pophyses is 12-5 mm.; the length of the upper border of the dorsal 

 spine is 8 mm. 



Shoulder girdle. The shoulder girdle is preserved entire, and con- 

 sists of two scapulae, two coracoids and an interclavicle. 



The scapula is 81 mm. long and expanded both at its proximal 



