i6o 



ZOOLOGY 



4. When the various fossils have been assembled 

 together and studied, many interesting facts appear. 

 We learn that the distribution of living things today is 



From American Naturalist 



FIG. 33. Fossils from Florissant. Above, a fossil oak leaf, Quercus ramalcyi, and 

 next to it a living representative, Quercus fendleri, which grows today in Colorado. 

 Below, a wing of an extinct dragon fly, Phenacolestes mirandus. Enlarged. 



