PLATE XVII. 



PAGE 



Fig. ,1. Schizodus prolongatus Herrick 512 



Cuyahoga shale (upper portion or Wav.-rly shale) Licking outity. 



Fig. 2. Schizodus pal^oniliformis, Herrick. 



Kinder hook Freestone; Licking county. 



Fig. 3. Schizodus harlemensis, Herrick. 



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



Fig. 4. Sphenotus (Cvpricardia? ) sp. 



Upper layers of Cuyahoga shale, Licking county. 

 Fig. 5. Grammysia famelica, Herrick. 



Upper layer of Cuyahoga shale, Licking county. 



Fig. 6. Schizodus newarkensis, Herrick. 



Burlington group, Newark. Ohio. 



Fig. 7. Macrodon sp. 



i Cuyahoga shale, Moot's run 



Fig. 8. Cypricardinia sciTula, Herrick. 

 Cuyahoga shale, Moot's run. 



Fig. 9. Macrodon reservatus, Hall. 



Kinderhook, Granville, Ohio. 



Fig. 10. Schizodus triangularis, Herrick. 



Kinderhook, Granville, O. 



Fig. 11. Grammysia? hannibalensis, Shutnard. 



Kinderhook Granville, Ohio. 



Fig. 12. Schizodus quadrangularis, Hall. 



Kinderhook, Granville Ohio. 



Fig. 13. Schizodus triangularis, Herrick. 



Kinderhook, Granville, Ohio. 



