20 NEW YORK STATE MUSEUM 



Upper Devonic of Iowa and Illinois 

 Class PISCES 

 D'lplodus priscus Bastman. Upper Devonic ; Elmhurst, 111. 

 Diplodus striatus Baseman. " " 



Diplodus sp. ind. " " 



Ptyctodus calceolus Newb. & W. Upper Devonic; Elmhurst, 111. Also 



State Quarry, Lime Creek and Sweetland Creek beds, Iowa. 

 Ptyctodus compressus Eastman. State Quarry beds ; Johnson county, la. 

 Ptyctodus ferox Eastman. State Quarry beds; Johnson county, la 

 Dinichthys pustulosus Eastman. " " 



Synthetodus trisulcatus Eastman. " " 



Dipterus costatus Eastman. " " 



Dipterus mordax Eastman. " •' 



Upper Devonic of Colorado 



Class AGNATHA 



Bothriolepis coloradensis Eastman. Elbert formation ; Rockwood. 



Class PISCES 

 Holoptychius giganteus Agassh. Elbert formation ; Devon Point. 

 Holoptychius tuberculatus Newberry. Elbert formation ; Devon Point. 

 Arthrodire fragments. Elbert formation ; Devon Point. 



Chautauquan stage (Chemung-Catskill) ; New York and Pennsylvania. 



Chemung group 

 Class AGNATHA 



Bothriolepis minor Leidy. Chemung group ; Bradford county. Pa. Cats- 

 kill ; Delaware county, N. Y. 



Class PISCES 

 Cladodus coniger Hay. Chemung group ; Warren, Pa. 

 Cladodus sp. High Point sandstone ; Naples, N. Y. 

 Helodus gibberulus Agassiz. Chemung group ; Warren, Pa. 

 Rhynchodus pertenuis Eastman. Chemung group ; Franklin, N. Y. 



