LOCALITIES. 169 



51i (=55d, which see). (For etratigraphic position and association, see p. 150.) (C. D. Walcott, 1898.) 

 Obelus (Westonia) ella. 



5j (same horizon as 4v; same locality as 3]V but 25 feet below). Lower Cambrian: Above the quartzitic sand- 

 stones, in a shale which corresponds in position to shale No. 6 of the Dearborn River section [see Walcott, 

 1908f, p. 202], about 6 miles (9.6 km.) west-northwest of Scapegoat Mountain, on the Continental Divide 

 between Bar Creek and the headwaters of the south fork of North Fork of Sun River, Coopers Lake quad- ■ 

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



Acrothele panderi. 



Albertella helena Walcott. 



5k. Middle Cambrian: Limestone in Meagher County, on the road to Wolsey, about 1 mile (1.6 km.) south of the 

 divide at the head of Sawmill Creek and 8 miles (12.8 km.) south of Neihart, Little Belt Mountains quad- 

 rangle (U. S. G. S.), Cascade County, Mont. (C. D. Walcott, W. H. Weed, and F. B. Weeks, 1895). 



Micromitra sp. I *Schuchertina cambria. 



Dicellomus politus. j Billingsella coloradoensis. 



5 1 (50 feet below 5n at same locality ; same horizon as 5p and 41). (For stratigraphic position and association, see 

 p. 141.) Lower Cambrian: Limestone on Smith Point, in Smith Sound, Trinity Bay, Newfoundland (C. D. 

 Walcott, 1899). 



Micromitra (Paterina) labradorica. 



Olenellus?. 



5n (50 feet above 5 1 at same locality; 275 feet below 5o). (For stratigraphic position and association, see p. 141.) 

 Lower Cambrian: Shale on Smith Point, in Smith Sound, Trinity Bay, Newfoundland (C. D. Walcott, 1899). 

 Obolella atlantica. 

 Callavia broggeri (Walcott). 



5o (about 275 feet above 5n; see 51 and 5n). (For stratigraphic position and association, see p. 141.) Lower 

 Cambrian: Just below the Middle Cambrian, in shales on Smith Point, in Smith Sound, Trinity Bay, New- 

 foundland (S. W. Loper and C. D. Walcott, 1899). 



Obolella atlantica. 



Olenellus?. 



8p (same horizon as 51 and 41). (For stratigraphic position and association, see p. 141.) Lower Cambrian: Lime- 

 stone 300 feet (91.4 m.) southeast of the railway station, Manuels, Conception Bay, Newfoundland (C. D. 

 Walcott, 1899). 



Obolella atlantica. 



Callavia broggeri (Walcott). 



5r. (For stratigraphic position and association, see p. 141.) Lower Cambrian: Limestone near the railroad track, 

 1.5 miles (2.4 km.) west of the railway station at Manuels, Conception Bay, Newfoundland (C. D. Walcott, 

 1899). 



Micromitra (Paterina) labradorica. 



Callavia broggeri (Walcott). 



St. (For stratigraphic position and association, see p. 141.) Lower Cambrian: Shale and limestone nodules about 

 20 feet (6 m.) above the base of the Cambrian, on Redrock Point, near Chappie Cove, Hollywood Point, Con- 

 ception Bay, Newfoundland (J. P. Howley and C. D. Walcott, 1899). 



Micromitra (Paterina) labradorica. 



Obolella atlantica. 



Callavia broggeri (Walcott). 



6g. (For stratigraphic position and association, see p. 141.) Middle Cambrian: Limestone near the base of the 

 Middle Cambrian, the lowest horizon carrying Paradoxides, northwest side of Chappie Arm Harbor, about 1 

 mile (1.6 km.) from its head. Trinity Bay, Newfoundland (J. P. Howley and C. D. Walcott, 1899). 



Micromitra (Iphidella) ornatella. 

 Micromitra (Iphidella) pannula maladensis. 

 Lingulella ferruginea. 



Acrothele matthewi. 

 Acrotreta misera. 

 Acrotreta sagittalis. 



61i. (For stratigraphic position and association, see p. 140.) Middle Cambrian: Limestone in the southwest cove of 

 Chappie Arm, Trinity Bay, Newfoundland (C. D. Walcott, 1899). 

 Acrotreta misera. 



