PLATE XVIII. 



PAGE. 

 F,g. 1. ORTHOCERAS RUSHENSIS ( ? ) 512' 



Cuyahoga s '.ale, upper layers ( Waverly sh tie . 

 Fig. 2. GONIATITES LYONI, Hall. 



Kinderhook Freestone; Granville, Ohio. 



Fig. 3. Nautilus sp. 



Cuyahoga shale, Moot's run 



F;g. 4. Operculum? 



Cuyaho a shale. 

 Fig. 5. EUOMPHALUS LATUS, Hall. 



Kinderhook Freestone ; Gra:.ville, Ohio. 

 Fig. 6. Murchisonia sp. 



Cuyahoga shale, Moot's run. 

 Fig. 7. LOXONEMA sp- 



Kinderhook, Oranv lie.' 



Fig. 8. Nautilus sp. 



Burlington, Newark. 

 Fig. 9. PlEurotomaria strigillaTa, Herrick. 

 Kinderhook, Granvi:li. 



Fig. 10. Pleurotomaria (Flemingia) stulta, Hsrrick. 



Kinderhook, Gratlville. 



Fig. 11. Pleurotomaria vadosa, Winchell ? 



Near the b ise of the Cuyahoga shale, near Harlem. 



Fig. 12. Platyceras vomerum, Winchell? 



Cuy.ihoga shale, Moot's run. 



