PLATE XVII. 



FOOT BONES OF TRICERATOPS. 



(See pp. 61, 63-64.) 

 Plate prepared under the direction of Marsh. 



Left metacarpal I, specimen in the U. S. National Museum. 



Fig. 1. Dorsal view. 



Fig. 2. External lateral view. 



Fig. 3. Palmar view. 



Fig. 4. Internal lateral view. 



Fig. 5. Proximal view. 



Fig. 6. Distal view. 



Fig. 7. Section of shaft. 

 Left metacarpal IV, specimen in the U. S. National Museum. 



Fig. 8. Dorsal view. 



Fig. 9. External lateral view. 



Fig. 10. Palmar view. 



Fig. 11. Internal lateral view. 



Fig. 12. Proximal view. 



Fig. 13. Distal view. 



Fig. 14. Section of shaft. 

 Metatarsal, specimen in the U. S. National Museum. 



Fig. 15. Anterior view. 



Fig. 16. Lateral view. 



Fig. 17. Posterior view. 

 Ungual phalanx from the pes, specimen in the U. S. National Museum. 



Fig. 18. Superior view. 



Fig. 19. Lateral view. 



Fig. 20. Inferior view. 



All one-fourth natural size. 



232 



