THE JURASSIC PERIOD. 



259 



3.nd do not even pass upwards into the Tertiary period. It 

 may be mentioned, however, that the Oolitic deposits have 

 also yielded the remains of Reptiles belonging to three of the 

 existing orders of the class namely, the Lizards (Lacertilia), 



Fig. 181. Arc/tcKopteryx macrura, showing tall and tail-feathers, with detached bones. 

 Reduced. From the Lithographic Slate of Solenhofen. 



the Turtles (Chelonia}, and the Crocodiles (Crocodilia). The 

 Lizards occur both in the marine strata of the Middle Oolites 

 and also in the fresh-water beds of the Purbeck series; and 



Fig. 182. Restoration of Arckceopteryx macrura. (After Owen). 



they are of such a nature that their affinities with the typical 

 Lacertilians of the present day cannot be disputed. The 

 Chelonians, up to this point only known by the doubtful evi- 



