5G0 



THE UNIVERSE. 



by inspired writers. This savant supposes that some ptero- 

 dactyls, having survived the era of general extinction, may 

 have been contemporary with the first men ; that these, 

 struck with their strange appearance, possibly preserved a 



222. Fossil Shells of the Secondary Period. 



1. Turrilites catenata, Protogcea. 



3. Terebratula. 



5. Striated Nautilus : Nautilus striatus. 



2. Oyster: Ostrcea columba (Lamarck). 



4. Mammillary Ammonite. 



6. Curved Gryphsea : Gryphcea incurva. 



few likenesses of them among their imperfect hieroglyphic 

 designs ; and that mythological tradition afterwards more 

 or less distorted the type. 



The second section of the Jurassic period often displays 



