566 



POPULAR SCIENCE MONTHLY. 



Fossil Bones of the Great Brachiosaurus allithorax, before Removal from the Rock 



After E. S. Riggs 



mains of camels, horses and of the great saher-toothecl tiger. This 

 was a great fissure deposit, into which enormous numbers of these 

 small animals had been washed, so the collection was numerically very 

 large. It is an interesting but not surprising fact that this small fauna 

 survived the subsequent glacial period, whereas the horses, sloths, camels 

 and saber-toothed tigers were all exterminated. 



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The Bone Cabin Quarry. South Central Wyoming. Fossilized bones of many differ, 

 ent kinds of the great amphibious dinosaurs, of the plated dinosaurs (Stegosaurs), of the large 

 carnivorous dinosaurs and of the small carnivorous dinosaurs are found mingled together in 

 this quarry. 



