\ 



PLATE XV. 



Figs. 1, 6. Ceratodds Huntekiancs. n, s. « 

 Figs. 1, 2, 4. Upper-jaw Teeth in various aspects. 

 Fig. 3. Two Teeth In contact. 



These teeth, by the same error as in Plate xiv, have been eiToneously placed, that 

 which is uppermost in the drawing being supposed to be the lower-jaw tooth. 

 Figs. 5, 6. Lower-jaw Tooth, top and side views. 

 Figs. 7, 8. Ceratodus oblongus. n. b. 



Fig. 7. Side view : Fig. 8. Top view. 

 Figs. 9,10. Young Tooth? Ceratodus. 

 Figs. 11, 12. CoPBOLiTEa. 



Fig. 11. Shews the Coprolite, with spiral arrangement exposed by breaking o£f the concretiouai-y mass, 

 with which it is covered as in Fig. 13, 



I 



