Fauna and Stratigraphy of the Stormberg Series. 411 



No. 3342 No. 3350 P. reinigeri 



Total length . . . 455 mm. 405 mm. 400 mm. 

 Length from lower end of 



lateral process to distal 



end of bone . . . 225 205 200 



Length of lateral process 90 90 ,, 100 



Thickness of lateral process 35 ,, 30 ,, 25 ,, 

 Distance between upper 



end of lateral processand 



inner angle of bone . 155 ,, 186 ,, 180 ,, 



Thickness of caputhumeri 68 ,, 55 55 ,, 



Thickness of shaft . . 53 ,, 43 ,, 55 ,, 



Breadth of shaft . . 63 53 



Breadth of distal end . 166 157 140 



Thickness at median condyle 51 ,, 50 ,, 48 ,, 



Thickness at lateral condyle 52 ,, 59 ,, 50 ,, 



Thickness between condyles 32 ,, 28 ,, 25 ,, 



From the humerus of Gresslyosaurus the bone differs in that its 

 proximal edge does not form such a high bow, its inner edge is 

 straighter in the proximal half, and the lateral process is much more 

 sharply bent over. The proximal edge is more curved than in the 

 other species of Plateosaurus or in Pacliysaurus; and the distal end 

 is not provided with sharp longitudinal ridges as in Teratosaurus. 



Radius. A left radius (Cat. No. 3347) has its lower end turned 

 towards the ulna. The upper part is flattened and broadened, having 

 slight median longitudinal grooves on both its medial and lateral 

 surfaces. The proximal articular surface is saddle-shaped, concave 

 in front, convex behind. From the higher posterior angle of the 

 bone a strong crest passes downwards and curves outwards, ending 

 abruptly on the posterior part of the lateral surface 60 mrn. down 

 the shaft. The proximal end is 83 mm. long and 43 mm. broad; 

 the distal end 60 mm. long and 53 mm. broad. The narrowest part 

 of the shaft has a diameter of 35 mm. The distal end is trapezoid 

 in shape, and its posterior half is obliquely inclined upwards and 

 backwards. 



Ulna. A left ulna (Cat. No. 3351) is compressed from side to side, 

 slightly bent with the medial face convex. The proximal end is bent 

 forwards and has an anteriorly directed prominent point. The hinder 

 portion of the proximal end is slightly higher than the anterior portion, 

 forming an incipient olecranon process. The lateral edge of the ar- 

 ticular surface is 108 mm. long and is slightly concave. From the 



