1903 1 



Hay^ North American Cretaceous Fishes. 



95 



The block on which this specimen is found is marked "Yank- 

 ton, Neb." Of the other vahd species of this genus R. fitrcatus 

 Agassiz is found in the Upper Cretaceous of Mount Lebanon 

 and Westphaha; R. ferox Davis and R. damoni Davis, in the 

 Upper Cretaceous of Mount Lebanon. 



Explanation of the abbreviations employed in the figures 

 and on the plates to indicate the names of the bones and 

 other structures. 



