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THE WORLD OF LIFE 



Fig. 64. — Restoration of a Long- Tailed Pterodactyl {Rhamphorhynchus 



'phyllurus ) . 



From the Upper Jurassic of Bavaria. (B.M. Guide.) Expanse of wings more than 

 2 feet. The long tail has a terminal web, shown in casts in fine lithographic 

 stone. 



The above restoration (Fig. 64), shows a larger species from 

 the Jurassic formation, at which period they were more varied. 

 This had a very long tail with a dilated membrane at its tip. 

 Allied species, with a long pointed tail, have been found in 

 the Lias of Lyme Regis, and also at Whitby. 



Fig. 65. — Toothless Pterodactyl {Pteranodon occidentalis) . 



From the Upper Cretaceous of Kansas, U.S.A. (B.M. Guide.) 



It was not till the Cretaceous period that the Pterodactyls 

 reached their greatest size, the species figured here having an 

 expanse of eighteen feet ; and these large forms have a pow- 

 erful but toothless beak (Fig. 65). 



Fragments of bone from the English Chalk indicate an 



