16 



DESCRIPTION OF THE PLATES. 



Base of skull of Rana esculenta. Fig. 9. 

 Skull and teeth of Triton cristatus. 

 Fig. 10. a, Intermaxillary teeth ; b, 

 maxillary teeth ; c, vomerine teeth of 

 Rana pipiens. Fig. 11. Cranium of 

 Plethodon glutinosus ; a, intermaxillary 

 teeth ; b, maxillary teeth ; c, vomerine 

 teeth ; d, pterygoid teeth ; e, sphenoid 

 teeth. Cuvier,* and Original. 



PLATE 62. A. 



Detached teeth of the following species. 

 Fig. 1. Dendrodus biporcatus : a, summit 

 of the tooth. (This is a Sauroid Fish.) 

 Fig. 2. Labyrinthodon conicus. Fig. 3. 

 Anisodon gracilis, tig. 4. Cladeiodon 

 Lloydii. a, side view : b, back view. 

 Fig. 5. Iguanodon Mantellii : a, outer 

 side ; b, inner side ; c, lateral view ; d, 

 an old tooth, fang complete and remains 

 of pulp- cavity exposed ; c, magnified 

 view of marginal serrations. Fig. 6. 

 Megalosaurus, Bucklandi. a, side view ; 

 b, back view ; c, magnified view of 

 serrated edge. Fig. 7. Paleeosaurus 

 platyodon. Fig. 8. a, b. Hylccosaurus{?). 

 Fig. 9. Goniopholis crassidens. Fig. 10. 

 a, b, Crocodilus (Suchosaurus) cultridens. 



PLATE 62. B. 



Fig. 1. Transverse section of the tooth of 

 the Dendrodus biporcatus, nat. size. 

 Fig. 2. A portion of the same, magnified 

 120 linear diameters, a, the large central 

 vascular or pulp canals. Fig. 3. A 

 transverse section of the same tooth one 

 third from its summit. Fig. 4. Peri- 

 pheral part of the section, magnified 500 

 linear diameters ; a, terminal branches of 

 medullary radiating canals ; b. thin in- 

 flected layer of cement. 



* Ossemeus Fossilcs, 4to. 1825, vol. v. jit. ii. 



PLATE 63. 



Fig.l. — Tooth of Labyrinthodon (Mastodon- 

 saurus) Jaegeri, nat. size. Jaeger. Fig. 2. 

 Two teeth of Phytosaurus cubicodon. 

 Jaeger. Fig. 3. Part of jaw and teeth 

 of Phytosaurus cylindricodon : a, socket of 

 large anterior tooth ; b, tooth with pulp- 

 cavity exposed ; c, old tooth with new 

 one rising through the pulp-cavity. Fig. 4. 

 Three teeth of Phytosaurus cylindrocodon. 

 Fig. 5. Tooth and alveolar wall of No- 

 thosaurus. Jaeger.* 



PLATE 63. A. 



Fig. 1. — Side view of part of upper jaw and 

 teeth of Labyrinthodon leptognathus. Fig. 2. 

 Side of part of under jaw of ditto. Figs. 

 1" & 2*. Teeth of ditto, nat. size, they 

 are marked * in figs. 1 & 2. Fig. 3. 

 Under surface of fig. 1. a large anterior 

 tusk ; b. smaller serial teeth of upper 

 jaw ; c, vomerine bone and teeth ; d, an- 

 terior palatine opening ; e, posterior pala- 

 tine opening. Fig. 4. Fore part of man- 

 dibular ramus of Labyrinthodon pachygna- 

 thus : a, large anterior tusks ; b, serial 

 teeth. Fig. 5. Upper surface of ditto. 

 Fig. 6. Skull and teeth of Pterodactylus 

 crassirostris. Fig. 7. Two of the sup- 

 posed teeth of the Pterodactylus macronyx. 

 Fig. 8. Inner view of part of upper jaw 

 of a Monitor Lizard {Varanus striatus). 

 a. remains of sockets of detached teeth. 

 Fig. 9. Part of lower jaw of Varanus 

 variegatus, showing the groups of two or 

 three successional teeth, behind the large 

 ones in place. Original. 



PLATE 63. B. 



Fig. 1 . — A transverse section near the sum- 

 mit : — fig. 2, the same near the base 



* Fossile Reptillen in Wurtemberg, 4to. 1828 



