List of Casts, Models, and Photographs. 



teeth and claws to attack a living prey, and it is quite probable 

 that this was the enemy from whose attacks the huge Broyxio- 

 sanrus sought refuge by habitually burying his great unwieldy 

 body beneath the water, as indicated by the skeleton structure 

 and illustrated in our restoration (No. 24) of that beast. 



In the Allosaimis restoration Mr. Knight has represented 

 him as preying upon the carcass of a Brontosaur, using the 

 powerful bird-hke hind feet in somewhat the same manner as 

 does a vulture or other bird of prey. 



29. Amphibious Dinosaur Diplodocus. 

 (In preparation.) 



30. Ichthyosaur, or Great Fish-Lizard. 



Jurassic Period. 



The discoveries of Ichthyosaurs, with the outlines of body 

 and tail preserved, in the great slate-quarries of Holzmaden in 

 Wurttemberg, as described by Professor Fraas in 1892, have 

 considerably altered our conceptions of this classic fossil 

 reptile. We now know that it had a high, triangular back fin 

 and broad, forked tail, like that of the shark, except that the 

 vertebral column ran into the lower wing instead of the upper 

 wing of the tail. The Holzmaden specimens, worked out with 

 wonderful skill and care by Herr Hauff, give the outlines of 

 almost all parts of the body, so that there is little (except as 

 to color) left to conjecture or inference in this restoration. 



Mr. Knight has associated with the old Ichthyosaur a little 

 school of new-born young whose proportions and size are 

 taken from the seven little Ichthyosaur skeletons contained 

 within the body-cavity of the large skeleton in the American 

 Museum. 



31. Great Sabre-tooth Tiger Smilodon. 



Pleistocene Epoch. 



Based on the complete skeleton in the Cope Collection, 

 found in the Pampean formation near Buenos Aires, and now 

 mounted in the American Museum. 



Smilodon may well be considered the most terrible of all 



