EVOLUTION IN THE PAST 



DiPLODOCUS 



Stegosaurus 



scelidosaurus 



Ceratosaurus 



Metriorhynchus 



Cryptoclidus and Pliosaurus 



Flying Lizards 



Arch^opteryx 



Alice B. Woodward 



Ernest Bucknall 

 Alice B. Woodward 



CRETACEOUS PERIOD 



90 (i) 

 90 (ii) 

 92 (i) 

 92 (ii) 

 94 (i) 



94 (") 



95 (i) 



96 (ii) 



