PART I CHAZYAN AND RELATED BRACHIOPODS—COOPER 1013 
McKnicent, E. T. 
1935. Zinc and lead deposits of northern Arkansas. U.S. Geol. Surv. Bull. 853, pp. 28-51. 
Mitter, A. M. 
1905. The lead and zinc bearing rocks of central Kentucky, with notes on the mineral 
veins. Kentucky Geol. Surv. Bull. 2. 
Miiter, R. L. 
1937. Stratigraphy of the Jacksonburg limestone. Bull. Geol. Soc. Amer., vol. 48, No. 11, 
pp. 1688-1717. 
Miter, R. L., and Brosce, W. P. 
1950. Geology of the Jonesville district, Lee County, Virginia. Oil and Gas Invest. 
Prelim. Map 104, pts. I, 2. 
NeEuMAN, R. B. 
1951. St. Paul group: A revision of the “Stones River” group of Maryland and ad- 
jacent States. Bull. Geol. Soc. Amer., vol. 62, No. 3, pp. 267-324. 
1956. Middle Ordovician rocks of the Tellico-Sevier Belt, Eastern Tennessee. U.S. 
Geol. Surv. Prof. Pap. 274F. 
Notan, T. B. 
1943. The Basin and Range province, in Utah, Nevada and California. U. S. Geol. Surv. 
Prof. Pap. 197-D. 
OrprK, A. 
1930. Brachiopoda Protremata der estlandischen Ordovizischen Kukruse-Stufe. Acta et 
Comment. Univ. Tartu, ser. A, vol. 17, No. 1, pp. 1-262, 22 pls., 26 text figs. 
1932. Uber die Plectellinen. Acta et Comment. Univ. Tartu, ser. A, vol. 23, No. 3, 
pp. 1-85, 12 pls. 
1933a. Uber Plectamboniten. Acta et Comment. Univ. Tartu, ser. A, vol. 24, No. 7, 
pp. I-79, 12 pls. 
1933b. Uber einige Dalmanellacea aus Estland. Acta et Comment. Univ. Tartu, ser. A, 
vol. 25, No. 1, pp. 1-25, 6 pls. 
1934. Uber Klitamboniten. Acta et Comment. Univ. Tartu, ser. A, vol. 26, No. 3, 
pp. 1-239, 48 pls. 
1939. Brachiopoden und Ostrakoden aus dem Expansusschiefer norwegens. Norsk Geol. 
Tidsskr. Oslo, vol. 19, pp. 117-142, pls. 1-6, text figs. I, 2. 
OxutitcH, V. 
1935. Fauna of the Black River group in the vicinity of Montreal. Canadian Field-Nat., 
vol. 40, No. 6, pp. 66-107, 2 pls. 
1936. Contributions to the study of the Ordovician of Ontario and Quebec. Pt. 2, The 
Black River group in the vicinity of Montreal. Geol. Surv. Canada Mem. 202, 
Publ. 2427, pp. 119-130. 
1939. The Ordovician section at Coboconk, Ontario. Trans. Roy. Canadian Inst., No. 48, 
vol. 22, pt. 2, pp. 319-330. 
1946. Geology of the Ottawa-St. Lawrence Lowland, Ontario and Quebec. Canada 
Dept. Mines and Res., Geol. Surv. Mem. 241, pp. 17-26. 
Panoper, C. H. 
1830. Beitrage Zur Geognosie des Russischen Reiches. 
PercIvaL, E. 
1944. A contribution to the life history of the brachiopod Terebratella inconspicua 
Sowerby. Trans. Roy. Soc. New Zealand, vol. 74, pt. 1, pp. 1-23. 
1953. Orientation of telotrematous Brachiopoda. Nature, vol. 171, p. 436. 
PHLEGER, F. B., Jr. 
1933. Notes on certain Ordovician faunas of the Inyo Mountains, California. Bull. South. 
California Acad. Sci., vol. 32, pt. 1, pp. I-21. 
Prouty, C. E. 
1946. Lower Middle Ordovician of southwest Virginia and northeast Tennessee. Bull. 
Amer. Assoc. Petrol. Geol., vol. 30, No. 7, pp. 1140-1191. 
