DIVISIONS OF REPTILIA. 277 



Order VIII. Anomodontia. 



This order lias lieen foumled for the reception of a number of fossil Reptiles 

 belonging to the period of the New Red Samlstoue, all of which seern to have 

 been adapted for walking upon the dry land. They were either destitute of 

 teeth — in which caf;e the jaws seem to have constituted a beak, like tliat of a 

 Turtle— or they possessed two great tusk-like teeth in the upper jaw (as is the 

 case in JHcynocUm). 



Order IX. Deinosauria. 



Tlie Reptiles of this order resemble the precedhig in being adapted for walk- 

 ing upon the dry land ; and they are confined to the Secondary period of geolo- 

 gists. They were mostly of large size, and the structure of the hind-limb is in 

 some respects singularly similar to the conformation of the same part in the 

 great wingless birds, such as the Ostrich (Cursores). The fore-ltmljs are in 

 many instances so small, that these extinct Reptiles must have walked U]ion 

 their hind-legs alone. The teeth are mostly adapted for an animal diet ; but 

 in some cases the animal must have lived upon vegetable food. The most 

 important groups comjirised in this order are Ljuanodon, Mer/alosaurw, and 

 IlaJrosoAiras. 



Order X. Theriodontia. 



This order has been recently established by Professor Owen for the reception 

 of a number of extinct Reptiles from the Kew Red Sandstone. They present 

 some singular resemblances to the ordinary Beasts of Prey {Carnivora), this 

 resemblance being especially seen in the fact that their teeth were arranged 

 in three distinct sets — incisors, canines, and molars ; and the canine teeth were 

 of large size and jiointed, ailapting their possessors for a predaceous and car- 

 nivorous mode of life. 



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