GEOLOGY OF THE EUREKA DISTRICT. 



DEVONIAN-Continued 



Genera and species. 



Jiracliiopoda Continued. 

 Rliynchonella pugnus Martin 



? occidens Walcott 



quadricosta Hall 



tethys Billings 



(L )'lanra Billings 



(L.) nevadensis Walcott. 



(L. ) siuuatus Hall 



Leptocoelia sp. ? 



Pentamerus comis Owen (sp.) 



lotis Walcott 



Tropidoleptus carinatus Hall 



Cryptonellaf circula Walcott -. 



piiioucnsis Walcott 



Terebratula, sp. ? 



Lamellibranchiata. 



Aviculopecten ? catactus Meek 



Ptcrinopecten, sp. f 



Glyptodesma, sp. ? 



Pteriuea newarkensis Walcott 



rlabella Conrad 



Actinopteria boydi Conrad (sp.) 



Leiopteria raiinesquii Hall 



Leptodesma trausversa Walcott 



Limoptera sarmenticia Walcott 



My tilarca dubia Walcott 



cheuiungeusis Conrad (sp.) 



sp. f 



(Plethomytilus) oviforinis, 

 Courad (sp.). 



Modiomorpha altiforme Walcott 



obtnsa Walcott 



Goniophora perangulata Hall 



Palii'oneilo, sp. ? 



Nucula rescuensis Walcott.-. 



sp. 



Nuculites triangulus H. & W 



iusularis Walcott 



Megamboiiia occidnalis Walcott 



Ny assa parva Walcott 



Grammy sia minor Walcott 



Edmondia pifionensis Meek 



iSauguiuolites? coinbensis Walcott 



? gracilis Walcott 



(Spathella) ventricosus 

 White & Whitfield (sp.). 

 (Spathella) oblonga Wal- 

 cott, 



Glossitcs ? sandusky ensis Meek 



Sphenotus contractus Hall 



Conocardium nevadensis Walcott 



sp 



Lunulicardium fragosum Meek (sp.). 



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Remarks. 



Devonian of Ohio, New York, and Eng- 

 land. 



Genesee Slate of New York. 



Up. Held, of Canada and Falls of Ohio. 



Ham. of Canada and New York. 



Ch. of New York. 



Not unlike L. acutiplicata Hall. 



Ham. and Ch. of Iowa. 



Found in Piiioii Range, Nevada. 



Geol. Expl. Fortieth Par., vol. IV, p. 93. 



Upper Held, to Ch. of New York. 

 Ham. group of New York. 

 Ham. group of New York. 



Ch. of New York. 

 Ham. of New York. 



Schoharie Grit of New York. 



Geol. Expl. Fortieth Par., vol. iv, p. 248. 



Geol. Expl. Fortieth Par., vol, iv, p. 46. 



Ch. of New York; Burlington sand- 

 stone of Iowa. 



Up. Held, of Ohio. 



Ch. of New York; Burlington sand- 

 stone of Iowa. 



Geol. Expl. Fortieth Par., vol. iv, p. 92. 



