172 CAMBRIAN BRACHIOPODA. 



8e. (For stratigraphic position and association, see p. 139.) Upper Cambrian: Limestone in Patterson Canyon, 

 west side of the Schell Creek Eange, White Pine County, Nev. (F. B. Weeks, 1900). 

 Lingulella manticula. 



8f. (For stratigraphic position and association, see p. 139.) Upper Cambrian: Limestone at summit of canyon 

 10 miles (16.1 km.) south of Egan Canyon, east side of Egan Range, White Pine County, Nev. (F. B. Weeks, 

 1900). 



Obolus discoideus. I Lingulella punctata. 



Lingulella manticula. | Eoorthis?. 



8g (=3s and 3t, which see). (For stratigraphic position and association, see p. 156.) (P. B. Weeks, 1900.) 

 Obolus mcconnelli pelias. 

 Acrothele subsidua. 



81. (For stratigraphic position and association, seep. 156.) Middle Cambrian: Shales believed to be referable to 

 the lower portion of the Marjum limestone [Walcott, 1908f, p. 180], found about 0.5 mile (0.8 km.) east of 

 Antelope Springs, House Range [Walcott, 1908f, PL XIII], Millard County, Utah (F. B. Weeks, 1900). 



Micromitra sculptilis. 



Obolus mcconnelli pelias. 



Kutorgina sp. 



8j. Middle Cambrian: About 575 feet (175.8 m.) above the unconformable base of the Cambrian, in a shale which 

 corresponds in position to shale No. 4 of the Dearborn River section [see Walcott, 1908f, p. 202], on the ridge 

 between Gordon and Youngs creeks, about halfway between Gordon Mountain and Cardinal Peak, Ovando 

 quadrangle (U. S. G. S.), Powell County, Mont. (C. D. Walcott, 1905). 



Micromitra (Paterina) superba. Ptychoparia sp. 



Obolus mcconnelli pelias. Zacanthoides sp. 



Bathyuriscus productus? (Hall and Whitfield). 



8k. (For stratigraphic position and association, see p. 156.) Middle Cambrian: Shales 0.5 mile (0.8 km.) northwest 

 of Tyler Springs, east slope of House Range, east of Antelope Springs [Walcott, 1908f, PI. XIII], Millard- 

 County, Utah (F. B. Weeks, 1900). 

 Obolus mcconnelli pelias. 



8m. (For stratigraphic position and association, seep. 139.) Middle Cambrian: Limestone near the south end 

 of the high ridge 4 miles (6.4 km.) northeast of Osceola, White Pine County, Nev. (F. B. Weeks, 1900). 

 Obolus mcconnelli. 

 Obolus mcconnelli decipiens. 



8n. (For stratigraphic position and association, seep. 139.) Upper Cambrian: Limestone about 500 feet (152 m.) 

 up in the Cambrian limestones east of Swallow ranch, west side of the Snake Range, 20 miles (32.2 km.) 

 south of Osceola, "WTiite Pine County, Nev. (F. B. Weeks, 1900). 

 Lingulella desiderata. 



8o. (For stratigraphic position and association, see p. 139.) Upper Cambrian : Limestone on the slope of the ridge 

 where the range swings around to the northwest, 2 miles (3.2 km.) north of Aurum, Schell Creek Range, 

 White Pine County, Nev. (F. B. Weeks, 1900). 



* Micromitra sculptilis endlichi. 

 Micromitra sp. 

 Obolus rotundatus. 



LinguleUa punctata. 

 Acrotreta microscopica. 

 Eoorthis sp. 



8p. (For stratigraphic position and association, see p. 139.) Upper Cambrian: Limestone halfway up the canyon 

 east of McGill's ranch, on the west side of the Schell Creek Eange, 14 miles (22.5 km.) northeast of Ely, 

 'W'hite Pine County, Nev. (F. B. Weeks, 1900). 

 Obolus rotundatus?. 



8q. Lower Cambrian: Shales near the contact between the Cambrian and the Triassic, 2 miles (3.2 km.) northwest 

 of York, York County, Pa. (A. Wanner, 1900). 

 Obolus sp. 

 Olenellus thompsoni rudis Walcott. 



8r. Upper Cambrian: Shales of the Emigrant formation [Turner, 1902, p. 265], about 8 miles (12.8 km.) south- 

 east of Emigrant Peak, Silver Peak quadrangle (U. S. G. S.), Esmeralda County, Nev. (H. W. Turner). 

 Obolus mcconnelli decipiens. 



8v. (For stratigraphic position and association, seep. 146.) Lower Cambrian: Shales in upper portion of Holmia 

 kjerulfi zone, Ringsaker, near Lake Mjosen, Province of Hedemarken, Norway (Schmalensee, 1900). 

 Obolella mobergi. 

 * Acrothele bellapunctata. 



