LIST OF ILLUSTRATIONS IN TEXT. 
FIG. PAGE 
1. Jaws of Mosasaurus camperi, from the Upper Cretaceous of 
Maastricht, Holland. (After Cuvier) .... 4 
2. Skeleton of Platecarpus coryphceus, from the Upper Creta¬ 
ceous of Kansas, U.S.A. (After Williston) ... 5 
3. Skeleton of Pteranodon occidentalism from the Upper Creta¬ 
ceous of Kansas ........ 7 
4. Skeleton of Pterodactylus spectabilis , from the Upper Juras¬ 
sic Lithographic Stone of Bavaria..... 8 
5. Restoration of Bhamphorhynchus phyllurus, from the Litho¬ 
graphic Stone of Bavaria. (After 0. C. Marsh) . . 9 
6. Skull of the existing Crocodilus palustris from India . . 11 
7. Skull of Metriorhynchus hastifer , from the Kimmeridge 
Clay of Normandy ... ... 13 
8. Tooth of Dakosaurus maximus, from the Kimmeridge Clay 
of Ely.13 
9. Skull of Pelagosaurus typus from the Upper Lias of Nor¬ 
mandy. (After Owen) ....... 14 
10. Skull of Belodon kapffi, from the Keuper of Wiirtemberg. 
(After H. von Meyer) . . . . . .15 
11. Skull and mandible of Diplodocus, from the Upper Jurassic 
of Colorado, U.S.A. (After 0. C. Marsh) ... 17 
12. Skeleton of Brontosaurus excelsus , from the Upper Jurassic 
of Colorado, U.S.A. (After 0. C. Marsh) ... 18 
13. Tooth probably of Ornithopsis hulkei , from the Wealden of 
the Isle of Wight ....... 19 
14. Skull and mandible of Sterrholophus flabellatus , from the 
Cretaceous of Wyoming, U.S.A. (After 0. C. Marsh) . 20 
15. Restored skeleton of Scelidosaurus harrisoni , from the 
Lower Lias of Dorset ....... 21 
16. Upper tooth of Scelidosaurus harrisoni .... 21 
17. Tooth of Iguanodon, from the Wealden of Sussex . . 22 
18. Skeleton of Iguanodon bernissartensis , from the Wealden of 
Belgium. (After L. Dollo) ...... 23 
19. Skull of Iguanodon bernissartensis , from the Wealden of 
Belgium. (After L. Dollo) ...... 24 
20. Skull of Ceratosaurus nasicornis, from the Upper Jurassic 
of North America. (After 0. C. Marsh) ... 25 
21. Tooth of Thecodontosaurus platyodon, from the Upper Trias 
of Bristol ......... 25 
