178 The Hydraulic Beds, etc.^ 



List of Devonian Fossils, Etc. (Continued.) 







a i> 









[elde 



H a 





"u 



O 



SPECIES. 



l« 

 o,— 



ydraulic 



crinal 



stones. 



[amilton 

 N. 



hemung 

 N. Y. 











o 



Gasteropoda (Continued), 











Belleroplion patulus ..... 





* 







Pteropoda. 











Coleolus tenuicinctum' ..... 





* 



* 





Cephalopoda. 









Gomphoceras turbiniforme 





* 







Goniattes discoideus, v. Oliiensis. 





* 



* 





Crustacea. 











Pliacops bufo, V. rana .... 





* 







Dalmanites myrmecophorus 



* 









D. anchiops ..... 



* 









D. iEoferia 



* 









D. Helena ..... 



* 









D. selenurus ..... 



* 









D. Calypso ..... 



* 









D. Pleione, representing D. Bootbi 











Proetus crassimarginatus .... 



* 









P. canaliculatus 











The above list of fossils is far from beiug complete ; 

 but at the present time we have not the means of perfect- 

 ing it. When once the facts are recognized, and the posi- 

 tion of these beds acknowledged, they will be studied 

 as a distinct formation, and the fossils separated from 

 those of the beds below, with which they have hitherto 

 been confounded. 



^ This fossil, which is apparently identical with the New York species, 

 is quite common in the same bed with Chonetes Yandellana, at the Falls 

 of the Ohio. Messrs. Yandell and Shumard in speaking of the " silice- 

 ous crust," above the waterlime, say : " In this crust we find a small 

 Orthoceratite, two and sometimes three inches in length, with very thin 

 septa. We have not been able to detect the position of the syphon. It is 

 always siliceous." This " small Orthoceratite " is unquestionably the Col- 

 eolus, cited above ; and the slender cinctse were very naturally regarded 

 as the septa. 



