IQO 



WATER REPTILES OF THE FAST AND FRESENT 



probability they will be discovered there when the Triassic deposits 

 of that continent have been better explored for fossils. In the 

 Rocky Mountains, especially, their remains are widely scattered, 

 they have been found in many localities in Wyoming, Colo- 

 rado, Oklahoma, Utah, and New Mexico. Though for the most 

 part their known remains from these localities are yet fragmentary, 

 not less than four distinct genera have been described from these 



Fig. 94. — Dorsal vertebrae of phyto- 

 saur: az, anterior zygapoph\sis; />:;, pos- 

 terior zygapophysis; d, c, articulations 

 of rib. 



I*"iG. 95. — Scapula and coracoid of 

 RiUiodon caroUnensis, an .American phy- 

 tosaur. (After McGregor.) 



regions: ^'Bclodon," AngislorJiimis, Paleorhimis, and Episcopo- 

 saurus. From the Carolinas and Massachusetts a single genus, 

 though described under numerous names, has been made known, 

 originally called by Emmons Ruliodon {Rhytidodon). And from 

 Europe and India at least as m.any more different genera are known. 

 All these genera are, however, so closely allied that they arc placed 

 in the single family Belodontidae. 



