GREAT DIXOSM'RS 



105 



mens to hv uncartlicd ])y the Museum, wliilc on tlic ri<,dit is ii nearly com- 

 plete skeleton of a related species mounted as it lay when ten million years 

 ago it settled to the bottom of a western lake wliere it was gradually covered 

 with sand and mud and slowly turned into stone. 



The gigantic skeleton in the center of the hall is the huge extinct rep- 

 tile, the dinosaur Bronfosduruff, found in the Jurassic heds 

 Brontosaurus ,.,,-. r • i i i <• • i • i 



ot Wyonung. It is the only mounted specnnen ot its kind 



in the world and more than two-thirds of the skeleton is the original i)et- 

 riHed hone. It is sixty-six feet eight inches in length, sixteen feet in height 

 and is estimated to have weighed when alive thirty-five tons. Bronto- 



'Wn\. 



TYRANNOSAURUS AND MAN 

 A man would have been but a mouthful for this the latest and largest of flesh-eating dinosaur 

 Skeletons of two of these monsters are now being mounted for exhibition 



AUosatinis 



saurus is one of the largest giant reptiles and as is indicated by its teeth 

 was herbivorous, probably living on the rank water weeds of the nearly 

 sea-level marshes of Wyoming. Contrasted with the herbivorous Bronto- 

 saurus, is the carnivorous dinosaur AUosaurus, mounted to 

 represent the animal feeding on the fallen carcass of a Bronto- 

 saurus, upon which it preyed. This is not a fanciful mounting for these 

 very skeletons were found in close proximity to each other in the Jurassic 

 beds of Wyoming, and the skeleton of the fallen Brontosaurus shows gouges 

 made by the teeth of AUosaurus as it tore the flesh from its victim. 



Near the AUosaurus group is a portion of a skeleton of Tyrannosaurus 



the last and most powerful of the carnivorous dinosaurs. Like AUosaurus 



it has enormous three-toed hind legs, armed with sharp 



saurus claws, and smaller forelegs. Tyrannosaurus is from ]\Ion- 



tana and the matrix in which it was found is as hard as flint. 



