CLASSIFICATION. 39 



Suborder (3). ORTHOPODA. 



Section (a). STEGOSAURIA. 

 Family Scelidosauridae. Polacanthus. 

 Family Stegosauridae. Stegosaurus. 



Section (b). CERATOPSIA. 

 Family Ceratopsidae. Polyonax (Ceratops). 



Section (c). ORNITHOPODA. 

 Family Camptosauridae. Hypsilophodon. 

 Family Iguanodontidae. Iguanodon. 

 Family Hadrosauridae. Hadrosaurus. 



Order 8. CROCODILIA. 

 Suborder (1). PARASUCHIA. 

 Family Phytosauridae. Phytosaurus (Belodon). 



Suborder (2). EUSUCHIA. 



Family Teleosauridae. Teleosaurus. 



Metriorhynchus. 



Family Goniopholidae. Goniopholis. 

 Family Alligatoridae. Alligator. 



Caiman. 



Jacare. 



Family Crocodilidae. Crocodilus. 

 Family Garialidae. Garialis (Gavialis). 



Order 9. PTEROSAURIA. 



Family Pterodactylidae. Pterodactylus. 



Family Rhamphorhynchidae. Rhamphorhynchus. 



Family Pteranodontidae. Pteranodon. 



