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. 
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