PLATE XII. 



ODONTOBNITHES. 

 Caudal vertebrae of Hesperornis regalis Marsh. 



All Figures Natural Size. Pa S e - 



Fig. 1. — First free caudal vertebra ; lateral view, seen from the left. Neural spine restored, . . 78 



la — Superior view. 



15 — Anterior view. 



15' — Posterior view. 



1g — Inferior view. 

 Fig. 2.— Second caudal vertebra ; lateral view, seen from the left, .,.-., 79 



2a — Superior view. 



25 — Anterior view. 



2c — Inferior view. 

 Fig. 3. — Third caudal vertebra ; lateral view, seen from the left, 79 



3a — Superior view. 



3b — Anterior view. 



3c — Inferior view. 

 Fig. 4. — Fourth caudal vertebra ; lateral view, seen from the left, . , 80 



4a — Superior view. 



45 — Anterior view. 



4c — Inferior view. 



Fig. 5. — Fifth caudal vertebra ; lateral view, seen from the left, - - 81 



5a — Superior view. 



55 — Anterior view. 



5c — Inferior view. 

 Fig. 6. — Sixth caudal vertebra ; lateral view, seen from the left, 82 



6a — Superior view. Diapophysis restored. 



65 — Anterior view. 



6c — Inferior view. . 

 Fig. 1. — Seventh caudal vertebra ; lateral view, seen from the left, 83 



la — Superior view. 



lb — Anterior view. 



'to — Inferior view. 



Fig. 8. — Eighth caudal vertebra ; lateral view, seen from the left, 83 



8a — Superior view. Hypapophysis restored. 

 85 — Anterior view. 

 8c — Inferior view. 



Fig. 9. — Ninth caudal vertebra ; lateral view, seen from the left, 84 



9a — Superior view. 

 95 — Anterior view. 

 9 c —Inferior view. 



Fig. 10. — Tenth and eleventh caudal vertebrae, 85 



10a — Superior view. 

 105 — Anterior view. 

 10c — Inferior view. 



