Ptero. 



814 



Pterodactylus crassirostris, Goldfuss. Another species 



Jar a. ^^' 



of flying lizard found at Solenhofen in Germany in the Mid- 

 dle Jurassic, 



Pterodactylus longirostris. The specimen of flying liz- 

 ard found at Solenhofen which most clearly displayed the ana- 

 tomy of the bat-like wing structure, the bird-like neck and 

 head, and the lizard-like teeth of this family. In Pennsylva- 

 nia we may possibly have strata of Middle Jurassic age; but 

 if so, no evidence of the fact in the shape of lithographic stone 

 or Jurassic fossil forms has ever been observed. This figure 

 is given in the Penny Cyclopedia, in a peculiarly satisfactory 

 style; much better than in the best Hand-books or Manuals of 

 Geology. 



Pteronitella curta. Billings, 1874. VI. 



Pteronitella oblonga. Bill., 1874. VI. 



Pteronitella venusta. Bill., 1874, VI. 



