at the Falls of the Ohio. 



175 



ton group in the state of N'ew York. A considerable 

 number of species occur in the Louisville upper limestones 

 which are not known in the Hamilton group of lN"ew 

 York : but these are largely among the Crinoidea, where 

 there has been no opportunity for a critical comparison of 

 specimens. The corals, with a single exception, are 

 omitted from the list, since they are almost in all respects 

 identical with those of the Upper Helderberg limestones 

 of New York, and their mention is quite unnecessary for 

 the present purpose. 



List of Devonian Fossils occurring at the Falls of the Ohio. 





^ . 

 2 a 



;En- 

 ime- 



p. 



"u 





« 2 



'^^ 



o 



O 



SPECIES. 



W2 



o 



o 



a 



a ■ 



to 

 a . 





u, kD 

 Ci.« 



ydrau 

 crinal 

 stone 



amilt 

 N. Y 















Corals. 











Michelinia stylopora ..... 







* 





Crinoidea. 











Actinocrinus eucliaris 





* 



* 





A. Kentuckensis ..... 











A. multicornis ..... 











A. pentaspina ..... 











A. Cassedayi ..... 











Megistocrinus abnormis ..... 











M. depressus ..... 











M. Knappi ...... 











M. Ontario ...... 





* 







M. rugosus ...... 











M. spicosulus ..... 











M. plenissimus ..... 











Dolatocrinus glyptus ..... 





* 







D. lacus ..... 





* 







D. sculptilis ..... 











D. Marslii ...... 











Cyathocrinus Iseviculus .... 





* 







C. sculptus ...... 





* 







C. Wortheni ..... 











C. valens ...... 











Rliodocrinus Halli . . . . 





* 







Potereocrinus cylindricus .... 



* 









P. simplex 











