CARNIVOROUS DINOSAURS 



215 



than I /4000 of the estimated body weight, indicates that in 

 animals mechanical evolution is quite independent of the 

 evolution of their intelligence; in fact, intelligence compensates 

 for the absence of mechanical perfection. Tyrannosaums is 



^^(f? 'y^<^ 



Fig. 93. Four Restorations of the "Ostrich" Dinosaur, Stnithiomimus 



{Ornithomimus). 



A. Showing the mode of progression. 



B. Illustrating the hypothesis that the animal was an anteater which used the front 



claws like those of sloths in tearing down anthills. 



C. Illustrating the hypothesis that it was a browser which supported the fore part of the 



body by means of the long, curved claws of the fore limb while browsing on trees. 



D. Illustrating the hypothesis that it was a wading type, feeding upon shrimps and 



smaller crustaceans. 

 Restorations by Osbom. No satisfactory theory of the habits of this animal has as 

 yet been advanced. 



an illustration of the law of compensation, first enunciated by 

 Geoffroy St. Hilaire, first, in the disproportion between the 

 diminutive fore limb and the gigantic hind limb, and second, 

 in the fact that the feeble grasping power and consequent 

 degeneration of the fore limb and hand are more than com- 

 pensated for by the development of the tail and the hind claws. 



