178 CAMBRIAN BRACHIOPODA. 



11. (For stratigraphic position and association, see p. 147.) Middle Cambrian: Sandstones and shales of the 

 Rome formation, about 1 mile (1.6 km.) east of Post Oak Springs [see Hayes, 1894, areal geology sheet], 

 Roane County, Tenn. (C. D. Walcott, 1891). 



Lingulella ino. 



*Lingulella tarpa. 



11a. (For stratigraphic position and association, see p. 147.) Middle Cambrian: Sandstone between First and 

 Armstrong creeks, in the southeast corner of the Maynardville quadrangle (U. S. G. S.), Union County, 

 Tenn. (C. D. Walcott, 1891). 



Obolus since. 



Lingulella tarpa. 



Dicellomus appalachia. 



lie. Upper Cambrian: Hardyston quartzite [Weller, 1900, pp. 110 and 112], O'Donnell and McManniman's quarry, 

 Newton, Sussex County, N. J. (H. E. Dickhaut, 1901). 

 *Lingulella welleri. 



Weller [1900, p. 12] cites the following from this locality: 



Ptychoparia newtonensis Weller. 

 Ptychoparia 2 sp. undt. 

 Anomocare parvula Weller. 

 Dikellocephalus newtonensis Weller. 



Foraminifera?. 



Lingulella stoneana=Obolus (Westonia) stoneanus. 



*Orthis newtonensis=Eoorthis newtonensis. 



Microdiscus? sp. 



Olenellus? sp. 



lid. (For stratigraphic position and association, see p. 137). Upper Cambrian: Arenaceous limestone about 2 

 miles (3.2 km.) north of Montana, in sec. 22, T. 35 N., R. 1 E., Iron County, Mo. (D. K. Greger). 

 Obolus matinalis ?. 

 Billingsella coloradoensis, 

 Eoorthis remnicha texana?. 



lie. (For stratigraphic pasition and association, see p. 137.) Middle Cambrian: In thin-bedded limestones south- 

 southwest of Potosi, Washington County, Mo. (D. K. Greger). 

 Obolus matinalis ?. 

 Lingulella similis. 

 Lingulella sp. 



Linnarssonella girtyi. 



Acrotreta microscopica missouriensis. 



Billingsella coloradoensis. 



llj. (For stratigraphic position and association, see p. 137.) Middle Cambrian: Basal part of Bonneterre lime- 

 stone, Mine Lamotte, Madison County, Mo. (E. O. Ulrich, 1904). 

 *Obolus lamborni. I Lingulella acutangula. 



Obolus since. ■ I Dicellomus nanus. 



Ilk. (For stratigraphic position and association, see p. 137.) Middle Cambrian: In sandstones and limestones of 

 the " Edgewise beds, " St. Francois County, Mo. (F. Naaon, 1901). 

 Lingulella acutangula. 

 Linnarssonella girtyi. 

 *Acrotreta microscopica missouriensis. 



111. (For stratigraphic position and association, see p. 137.) Upper Cambrian: Arenaceous limestone of the 

 Elvins formation, 50 feet (15.2 m.) above the " EdgewisQ beds, " St. Francois County, Mo. (F. Nason, 1901). 

 Lingulella acutangula ?. 

 Billingsella coloradoensis. 

 Eoorthis remnicha texana ?. 



11m. (For stratigraphic position and association, see p. 137.) Middle Cambrian: Drill cores of limestone in the 

 Bonneterre limestone, at horizons 10 and 20 feet (3 and 6 m.) above the Lamotte sandstone, at Flat River, 

 St. Francois County, Mo. (F. Nason, 1901). 



Micromitra sp. 



Micromitra (Paterina) cf. stissingensis, 



Obolus lamborni. 



Lingulella cf . ora. 

 Dicellomus nanus. 

 Dicellomus politus. 



lln. (For stratigraphic position and association, see p. 155.) Middle Cambrian: About 3,000 feet (914.4 m.) above 

 the Lower Cambrian and 1,400 feet (426.7 m.) below the Upper Cambrian, in the upper part of the lime- 

 stone forming la of the Marjum limestone [Walcott, 1908f, p. 179], in the long cliff 2 miles (3.2 km.) south- 

 east of Marjum Pass [see Walcott, 1908f, Pis. XIII and XV], House Range, Millard County, Utah (C. D. 

 Walcott, F. B. Weeks, and L. D. Burling, 1903 and 1905). 



Obolus mcconnelli pelias. 

 *Obolus (Fordinia) gilberti. 

 Acrotreta bellatula. 



*Acrotreta marjumensis. 

 *Acrotreta cf . sagittalis. 

 Agnostus 4 sp. 



