PLATE XVII. 



, PAGE 



Fig. 1. Schizodus prolongatus Herrick 512 



Cuyahoga shale (upper portion or Wav rly shale) Licking c iuuty. 

 Fig. 2. Schizodus PAL-'EONILIFORMIS, Herrick. 

 Kinderhook Freestone ; Licking county. 



Fig. 3. Schizodus harlemensis, Herrick. 



Lower part of Cuyahoga shale. Near Harlem, Delaware county. 



Fig. 4. Sphenotus ( Cypricardia ? ) sp. 



Upper layers of Cuyahoga shale, Licking county. 

 Fig. 5. Grammysia famelica, Herrick. 



Upper layer of Cuj'ahoga shale. Licking county 



Fig. 6. Schizodus newarkensis, Herrick. 



Burlington group, Newark, Ohio. 

 Fig. 7. Macrodon sp. 



Cuyahoga shale. Moot's run 

 Fig. 8. Cypricardinia sciTula, Herrick. 



Cuyahoga shale, Moot's run. 

 Fig. 9. Macrodox reservaTUS, Hall. 



Kinderhook, Granville, Ohio. 

 Fig. 10. Schizodus triangularis, Herrick. 



Kinderhook, Granville, O. 



Fig. 11. Grammysia? hannibalensis, Skumard. 



Kinderhook Granville, Ohio. 



Fig. 12. Schizodus quadrangularis, Hall. 



Kinderhook. Granville Ohio. 



Fig. 13. Schizodus triangularis, Herrick. 



Kinderhook, Granville, Ohio. 



