32 THE COLLECTION OF FOSSIL VERTEBRATES 



Fossil Fishes. 



Some of the finest specimens of fossil fishes in the collection 

 are exhibited in the corridor hall. Others are placed in the 

 southwest corner of the Fossil Reptile Hall. These range from 

 the exceedingly ancient and archaic types, such as the huge 

 Dinichthys of the Age of Fishes, older even than the fossil Am- 

 phibians, to more modern and familiar types such as the fossil 

 Perch and Herring of the Green River Tertiary formation. 



