PLATE XVIII. 



PAGE. 



Fg. 1. Orthoceras rushensis (?) 512 



Cuyahoga s :ale, upper layers ( Waver]}' sh ile 

 Fig. 2. GONIATITES LYONI, Hall. 



Kiuderhook Freestone; Granville. Ohio. 



Nautilus sp. 



Cuyahoga shale, Moot's run 



Operculum ? 



Cuyaho .a. shale. 



EUOMPHALUS LATUS, Hall. 

 Kiuderhook Freestone ; Granville, Ohio. 



MURCHISONIA sp. 

 Cuyahoga shale. Moot's run. 



LOXONEMA Sp" 

 Kiuderhook, Granv.lle. 



Nautilus sp. 



Burlington, Newark. 



Pleurotomaria STRigillata, Herrick. 

 Kinderhook. Granville. 



Pleurotomaria (FlEmingia) stulta, Herrick. 

 Kinderhook, Granville. 



Pleurotomaria vadosa, Winchell? 

 Xear the h lse of the Cuyahoga shale, near Harlem. 



Pi.atvceras VOMERUM, Winchell? 

 Cuy.ihoga shale. Moot's run. 



Fig. 



3. 



Fig. 



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Fig. 



5. 



Fig. 



6. 



Fig. 



7. 



Fig. 



8. 



Fig. 



9. 



Fig. 



10. 



Fig. 



11. 



Fig. 



12. 



