202 CAMBRIAN BEACHIOPODA. 



53 (below 178a). (Forstratigraphicpositionandassociation, seep. 138.) Lower Cambrian: Sandstones in the lower 

 portion of 3d of the Waucoba Springs section [Walcott, 1908f, pp. 187 and 188], 1 mile (1.6 km.) east of Saline 

 Valley road, about 2.5 miles (4 km.) east-northeast of Waucoba Springs, Inyo County, Cal. (C. D. Walcott, 

 1897). 



Ethmophyllum gracile Meek. 



Hyolithes sp. 



Wanneria gracile Walcott. 



Mickwitzia occidens. 

 Obolella vermilionensis. 

 *Trematobolus excelsis. 

 Archseocyathus. 



53a. (For stratigraphic position and association, see p. 138.) 

 Obolella sp. 



54. (For stratigraphic position and association, see p. 140.) Middle Cambrian : Eldorado limestone [Walcott, 1908f, 

 p. 184] on east slope of Prospect Mountain, in New York Canyon, Eureka district [Hague, 1892, Atlas], 

 Eureka County, Nev. (C. D. Walcott, 1886). 



Lingulella arguta. 



Lingulella punctata. 



54a (=31e). (For stratigraphic position and association, see p. 151.) (C. D. Walcott and L. D. Burling, 1906.) 



Micromitra (Paterina) labradorica utahensis. 

 Obolus (Westonia) ella. 

 Acrothele turneri?. 



Isoxys cf. argentea (Walcott). 

 Ptychoparia. 



54b. (For stratigraphic position and association, see p. 148.) Upper Cambrian: About 1,200 feet (365.8m.) above 

 the Middle Cambrian and 25 feet (7.6 m.) below the top of the Upper Cambrian, in the upper part of the 

 limestone forming 1 of the St. Charles limestone [Walcott, 1908f, p. 191], in Blacksmi+h Fork Canyon, about 

 10 miles (16.1 km.) east of Hyrum, Cache County, Utah (C. D. Walcott and L. D. Burling, 1906). 



Lingulella manticula. I Syntrophia nundina. 



Eoorthis desmopleui-a. I Dikellocephalus . 



64c. (For stratigraphic position and association, see p. 148.) Upper Cambrian: About 1,100 feet (335.3 m.) above 

 the Middle Cambrian and 120 feet (36.6 m.) below the top of the Upper Cambrian, in the central part of the 

 limestone forming 1 of the St. Charles limestone [Walcott, 1908f, p. 192], in Blacksmith Fork Canyon, about 

 10 miles (16.1 km.) east of Hyrum, Cache County, Utah (C. D. Walcott and L. D. Burling, 1906). 



Schizambon typicalis. 

 Eoorthis desmopleura. 

 *Eoorthis newberryi. 

 Syntrophia nundina. 



Solenopleura. 



Menocephalus. 



niaenurus. 



54d. (For .stratigraphic position and association, see p. 148.) Upper Cambrian: About 1,050 feet (320 m.) above the 

 Middle Cambrian and 175 feet (53.3 m.) below the top of the LTpper Cambrian, in the lower part of the lime- 

 stone forming 1 of the St. Charles limestone [Walcott, 1908f, p. 192], in Blacksmith Fork Canyon, about 10 

 miles (16.1 km.) east of Hyrum, Cache County, Utah (C. D. Walcott and L. D. Burling, 1906). 



Lingulella (Lingulepis) acuminata. 

 Eoorthis desmopleura. 

 Eoorthis newberryi. 

 Agnostus. 



Menocephalus. 



Solenopleura. 



Asaphus?. 



54e. (For stratigraphic position and association, see p. 149.) Upper Cambrian: About 200 feet (61 m.) above the 

 Middle Cambrian and 1,025 feet (212.4 m.) below the top of the Upper Cambrian, in limestones forming 3 of 

 the St. Charles limestone [Walcott, 1908f, p. 193], in Blacksmith Fork Canyon, about 10 miles (16.1 km.) east 

 of Hyrum, Cache County, Utah (Mrs. C. D. Walcott, Stuart Walcott, and L. D. Burling, 1906). 



Obolus discoideus. 

 Obolus (Westonia) ella. 

 Lingulella manticula. 

 Billingsella coloradoensis. 

 *Huenella lesleyi. 



Hyolithes. 



Cyrtolites. 



Agnostus. 



Ptychoparia. 



Anomocare. 



54f . (For stratigraphic position and association, see p. 149.) Upper Cambrian : 150 feet (45.7 m.) above the Middle 

 Cambrian and 1,075 feet (327.7 m.) below the top of the Upper Cambrian, in the light-gray sandstone forming 

 4 of the St. Charles limestone [Walcott, 1908f, p. 193], in Blacksmith Fork Canyon, about 10 miles (16.1 km.) 

 east of Hyrum, Cache County, Utah (C. D. Walcott and L. D. Burling, 1906). 



Obolus discoideus. I Acrotreta idahoensis alta. 



Obolus (Fordinia) bellulus?. I Billingsella coloradoensis. 



