204 INDEX 



Petrified bodies, 6 

 Phororhacos, description of, 122 



mistaken for mammal, 123 



Patagonian bird, 122 



related to heron family, 125 



restoration, frontispiece 



skull, 123, 124* 

 Plesiosaurus, 33-35 

 Protohippus, 138 

 Pteranodon, 70,* 72* 

 Pteraspis, 17 

 Pterichthys, 15, 17, 21* 



mistaken for crab, 15 

 Pterodactyls, impressions of wings, 111 



from Kansas, 39 



wing, 52* 



flying reptiles, 69-79 

 Py craft, W. P., restoration of Archseopteryx, 68* 



Radiolarians, 9 

 Rhamphorhynchus, 78* 

 Reconstruction of animals, 106, 108, 112 

 Reptiles, fasting powers of, 86 



growth throughout life, 89 



jaws, 37 



flying, 69-79 

 Restorations, x 



Archseopteryx, 68* 



Delabeche's, extinct animals, 114* 



Hesperornis, 58* 



Mammoth, 146* 



Mastodon, 167* 



Phororhacos, frontispiece 



progress in, 113 



Stegosaurus, 91* 



