132 
Plate XVII 
DM* 
Vertebrae of Thespesius saskatchewanensis 
Type No. 8509, Geol. Surv., Canada 
Figure 1 . First to seventh and tenth to eighteenth dorsals. T V natural size. (Page 83.) 
Figure 2. Sixth (?) caudal. Anterior view. I natural size. (Page 83.) 
Figure 3. Sixth (?) caudal. Inferior view. $ natural size. (Page 83.) 
