170 CAMBEIAN BRACHIOPODA. 



6i (280 feet below 6b). (For stratigraphic position and association, see p. 140.) Middle Cambrian: Limestone 

 about 300 feet (91.4 m.) below the base of the Upper Cambrian, on shore north of Fosters Point, Random 

 Island, Random Sound, Newfoundland (G. D. Walcott, 1899). 



Acrotreta sagittalis. 



Agnostus. 



Microdiscus. 



61 (=la, except that the fossils, were collected on the east side of the brook). (For stratigraphic position and 

 association, see p. 140.) (C. D. Walcott, 1899.) 

 Lingulella ferruginea. | Acrotreta?. 



Acrothele matthewi. | *Eoorthis papias. 



6n (=la, except that the fossils were collected on the west side of the brook). (For stratigraphic position and 

 association, see p. 140.) (C. D. Walcott, 1899.) 

 Lingulella ferruginea. 

 Acrothele matthewi. 

 Acrothele prima costata. 



6r. (For stratigraphic position and association, see p. 140.) Middle Cambrian: Limestone on the west side oi 

 Manuels Brook, Conception Bay, Newfoundland (C. D. Walcott, 1899). 

 Lingulella ferruginea. 

 Acrotreta misera. 



6s (=6u; 280 feet above 6i). (For stratigraphic position and association, see p. 140.) Upper Cambrian: Just 

 north of Fosters Point, Random Island, Random Sound, Newfoundland (C. D. Walcott, 1899). 

 Lingulella ferruginea?. 



6u (same horizon as 6s). (For stratigraphic position and association, see p. 140.) Upper Cambrian: Shale on the 

 west side of Manuels Brook, Conception Bay, Newfoundland (C. D. Walcott, 1899). 

 Lingulella ferruginea. 



6v (375 feet above 6n). (For stratigraphic position and association, see p. 140.) Upper Cambrian: Shaly lime- 

 stones 325 feet (99.1 m.) above the Middle Cambrian, Manuels Brook, Conception Bay, Newfoundland (C. D. 

 Walcott, 1899). 

 Orusia lenticularis. 



6w. (For stratigraphic position and association, see p. 140.) Middle Cambrian: Limestone at Seal Point Cove, near 

 Long Point, Trinity Bay, Newfoundland (C. D. Walcott, S. W. Loper, and J. P. Howley, 1899). 

 Acrotreta sagittalis. 



6y. (For stratigraphic position and association, see p . 140. ) Upper Cambrian : Sandstone on north side of Random 

 Island, between Birch and Sandy points. Smith Sound, Trinity Bay, Newfoundland (C. D. Walcott and 

 S. W. Loper, 1899). 

 *Lingulella randomensis. 



7. (For stratigraphic position and association, see p. 138.) Lower Cambrian: Shaly beds about 1,000 feet (305 m.) 

 above the quartzitic beds. Silver Canyon, \Miite Mountain Range, Inyo County, Cal. (C. D. Walcott, 1894). 

 Kutorgina perugata. 

 Yorkia wanneri?. 



7d. (For stratigraphic position and association, see p. 147.) Upper Cambrian: Shales in second cliff, 0.125 

 mile (0.2 km.) west of Peak post office, 3 miles (4.8 km.) south of Clinton, Briceville quadrangle (U. S. G. S.), 

 Anderson County, Tenn. 



Obolus lambomi. 



Lingulella ino. 



7i. (For stratigraphic position and association, see p. 139.) Middle Cambrian: Limestone just west of the summit, 

 on the road east of Schellbourne, Schell Creek Range, ^Tiite Pine County, Nev. (J. E. Spurr, 1899). 

 Obolus rotundatus. I Lingulella punctata. 



Lingulella manticula. | Acrotreta idahoensis alta. 



7j. Middle Cambrian: Limestones at the north end of the Quinn Canyon Range, 1 mile (1.6 km.) northwest of 

 the Italian Ranch foothills, Nye County, Nev. (J. E. Spurr, 1899). 



Micromitra 2 sp. undt. 

 Obolus rotundatus. 

 Lingulella manticula. 

 "Lingulella similis. 



Fossils marked ° may not all be from the same bed or even from the same approximate stratigraphic horizon. 



*Acrotreta cf . idahoensis. 

 "Acrotreta primseva?. 

 "Acrotreta pyxidicula. 



