37° 



REPTILES xiv. i- 



1. Classification {cont.) 



Suborder 2. Ophidia (= Serpentes). Cretaceous-Recent 

 *Palaeophis; Python; Natrix; Naja; Vipera 



Subclass 5. Archosauria 



Order 1. *Pseudosuchia (= *Thecodontia). Trias 



*Enparkeria; *Saltoposuchns 

 Order 2. *Phytosauria. Trias 



*Phytosaurus; *Mystriosuchus 

 Order 3. Crocodilia. Trias-Recent 



*Protosuchus; Crocodilus; Alligator; Caiman; Gavialis 

 Order 4. *Saurischia. Trias-Cretaceous 

 Suborder 1. *Theropoda 



*Compsog?iathus; *Ornitholestes; * Allosaurns ; *Tyranno- 

 saurus; * Strnthiomimus 

 Suborder 2. *Sauropoda 

 *Apatosaurus (= *Brontosaurus); *Diplodocus; *Yaleosaurus; 

 *Plateosanrus; Brachiosaurus 

 Order 5. *Ornithischia. Trias-Cretaceous 

 Suborder 1. *Ornithopoda 



*Camptosaurus; *Iguanodon; *Hadrosaurus 

 Suborder 2. # Stegosauria 



* Stegosaurns 

 Suborder 3. *Ankylosauria 



* Ankylosaurus ; *Nodosanrus 

 Suborder 4. *Ceratopsia 



* Triceratops 



Order 6. *Pterosauria. Jurassic-Cretaceous 

 *Rhamphorhynchns ; *Pteranodon 



Subclass 6. *Synapsida. Carboniferous-Permian 



Order 1. # Pelycosauria (= # Theromorpha) 



* Varanosaurus; *Edaphosaurus; *Dimetrodon 

 Order 2. *Therapsida. Permian-Jurassic 



*Scym?iognathus; *Cyiiognathus; *Bauria; *Dromatherium; 

 * Dicynodon 

 Order 3. *Mesosauria (— Proganosauria). Permian 

 *Mesosaurus 



