322 



GEOLOGY OF THE EUKEKA DISTRICT. 



LOWER SIIiUKIAN (Ordovician). 



rOGONIP TERRANB. 



[The letter C in the first column denotes that the species also occurs in the Cambrian.] 



Genera aud species. 



Ehizopoda. 



Reccptaculites ellipticus Walcott 



elongatus Walcott 



mammillaris Newberry 



Hydrozoa. 



Grajitolitlins sp. ? 



Adinosoa. 



Monticulipora sp.? 



Poli/soa. 



Ptilodictya, sp.f 



liracliiopoda. 



Lxn,tcnlepis niiera II. & W , 



fmiuuta II. & W . 

 Liiifjiila ? manticula White . 



sp.? 



Olx.lella ? ambigua Walcott 



.liscoidea H. & W . . , 

 Acrotveta gemma* Billings... 



p. ? 



Scbizaml)on typicalis Walcott . 

 Leiiticna meli'ta H. & W 



Stropbonicua nemea H. & W . . . 

 Ortliis hambnrgi'iisi.s Walcott.. 



loiicu.sis Wiilcott 



piT% eta ( 'ourail 



pogonipcn.sis 11. &W.... 



tcstiidiiiaiia Dalniau 



ti'icenaria Conrad 



sp. f 



sp. ? 



Streptorbynebns minor AValcott 



Porambonites obscnrus H. & W I 



Triplesia calciiera Billings ' x 



Lamellihranch in to . 



Telliuoniya eontracta Salter? 



-1 bamburgensis Walcott . 



Modiolojisi.s occidens Walcott 



pogonipensis Walcott... 



sp. « 



• Identifliil by Mr. ileck, fnim llalarto Cit 



® -. 



.„ o ft 



Like G. bifidns Hall. 



Types from Enreka and White Pine 



districts. 

 Type from Eureka District. 

 Type from Schell Creek Range, Nevada. 



Type from Eureka District. 

 Type from Calciferous formation in New- 

 foundland. 

 Eike A. subconica Kntorga. 



Type from Eureka District. 



Type from White Pine District, Nevada. 



Trenton of Wisconsin, Chazy of Canada. 

 Geol. Exjil. Fortieth Par., vol. iv, p. 23. 

 Trenton group sj)ecies of New York, 



Canada, etc. 

 Trenton group species of New York, 



Canada, etc. 



Geol. Expl. Fortieth Par., vol. IV, p. 234. 

 Calciferous formation of Canada. 



Trenton group species. 



U. 

 U. 

 U. 

 Ilayileii'a Kviiorl lor 1S72, p. 464. 



