130 C. W. TOM LIN SON 



MIDDLE 0RD0VICIAN 



Member 4: 



Spheroidal algae. Teton River. 



Receptaculites oweni Hall. Livingston Peak. 



Lichenaria cf. typa Winchell and Schuchert. Rattlesnake Mountain. 



Columnaria alveolata Goldfuss. Rattlesnake Mountain, Dead Indian 



Creek, Crandall Creek. 



Halysites gracilis (Hall). Blacksmith Fork. 



Streptelasma corniculum Hall. Goose Creek Ridge, Dead Indian Creek 



(sp. ?), Crandall Creek. • 



A new cyathophyllid coral. Crandall Creek. 



Member 2: 



Receptaculites oweni Hall. Crandall Creek. 



Halysites gracilis (Hall). Dead Indian Creek, Crandall Creek. 



Streptelasma corniculum Hall. Crandall Creek. 



Zygospira sp. Crandall Creek. 



Clinoceras( ?) sp. Crandall Creek. 



Member 1, within 5 feet of top (Goose Creek only): 

 Lophospira sp. 

 Raphistoma{ ?) sp. 

 Cyrtoceras( ?) sp. 

 Orthoceras sp. 

 Receptaculites oweni Hall. 



EARLY 0RD0VIC1AN (BEEKMANTOWN) (BLACKSMITH FORK ONLY) 



Member 4, near top: 



A small StreptelasmaASkt coral. 



A small cylindrical bryozoan. 



Several species of orthid and strophomenoid brachiopods, including a 



form probably identical with that called by Walcott 1 "Orthis testu- 



dinaria," from the Upper Pogonip; a form very similar to, and perhaps 



identical with, the one called by White 2 "Strophomena fonlinalis"; and 



a form which is probably identical with that called by Walcott 3 "Orthis 



perveta." 



Two species of low-spired gastropods. 



Orthoceras sp. (small, annulated form). 



1 C. D. Walcott, "Paleontology of the Eureka District, Nevada," U.S. Geol. 

 Survey, Monographs, VIII (1884). 



2 C. A. White, "Invertebrate Paleontology: Report upon Geographical and 

 Geological Surveys West of the One Hundredth Meridian," IV, Part 1 (1875), Engineer 

 Department, United States Army. 



» Op. cit. 



