﻿PART II 



CHAZYAN AND RELATED BRACHIOPODS— COOPER H09 



I. Triplesia carinata Cooper, new species '''"'"'"'""'" 



(41-43) Respectively side, exterior, and posterior views of a brachial valve, X 2, 



holotype, 117095a. _, . ,. ~ , 



Pratt Ferry formation, 0.2 mile south of Pratt Ferry, Blocton (15 ) Quad- 



rangle, Ala. 



J Oxoplecia depressa Cooper, new species • • • • ; " • • 



(44-48) Respectively anterior, side, posterior, pedicle, and brachial views, X 2, 

 of the holotype, 117100b; (49) brachial view, X I, of the preceding. 

 Effna formation, 4 miles southwest of Bland, Bland County, Va. 



K. Onychoplecia tenuis Cooper, new species • • • • " • • 



(50) Brachial view of a complete specimen, showing fold on pseudodeltidium, X 4, 

 holotype, 1 1 7091. 



Bromide formation (Mountain Lake member), McLish Ranch, sec. 24, 1. 1 b., 



Page 



537 



540 



535 



R. 7 E., Johnston County, Okla. 



Plate 101 

 Oxoplecia 



556 



55i 



A Oxoplecia simulatrix (Bassler) •_ ; *' * * 



(1-5) Respectively posterior, pedicle, side, brachial, and anterior views of a large 

 individual, XL hypotype, 97599a; (6-10) respectively side, pedicle, posterior, 

 anterior and brachial views of a small complete specimen, X I, hypotype, 117127. 

 Oranda formation (lower), on Virginia County Road 777 just west of its 

 junction with County Road 617 = 9™, * mile north-northwest of Green Mount 

 Church, Broadway (15') Quadrangle, Va. 



B Oxoplecia simulatrix (Bassler) Q '"/' 



(11) Brachial view of an immature specimen, X 1, paratype 117128 (ex 

 U.S.N.M. 66174) ; (12-15) respectively anterior, side, brachial, and pedicle 

 views, X 2, of the same specimen. 



Oranda formation, along the railroad, ± mile west of Strasburg, Strasburg 

 (15') Quadrangle, Va. 



C Oxoplecia occidentalis (Butts) ■ ; / • • • " 



(16-20) Respectively pedicle, anterior, side, brachial, and posterior views of a com- 

 plete specimen, X I, hypotype, 117116a; (21, 22) brachial and pedicle views of 

 another specimen, X 2, hypotype, 117116b. 



Bromide formation (149 feet below top), \ mile west of U. S. Highway 77, 

 sec. 25, T. 2 S., R. 1 E., Carter County, Okla. 



D. Oxoplecia hoist onensis Willard ',"",' \ • l " 



(23-27) Respectively anterior, brachial, side, posterior, and pedicle views of a 

 large, obese specimen, Xh hypotype, 117107; (42) pedicle interior showing 

 interarea and pseudodeltidium, X 2, hypotype, 117102a; (43) posterior view of a 

 brachial interior showing the base of the shaft of the cardinal process, X 2, 

 hypotype, 117102b. 



Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady 

 (T.V.A. 218-NW) Quadrangle, Va. 

 (28-30, 32) Respectively anterior, posterior, brachial, and pedicle views of a com- 

 plete specimen, X h hypotype, 117105b. 



Edinburg formation (Liberty Hall fades (base)), 1 mile northwest of Lex- 

 ington, Lexington (15') Quadrangle, Va. 

 (31, 33, 34, 35) Respectively posterior, side, pedicle, and brachial views of an in- 

 complete' but strongly costellate specimen, Xh hypotype, 117106c; (36, 37) 

 brachial and pedicle views of a well-preserved youthful specimen, X I, hypotype, 

 ii7io6d; (38) exterior of a pedicle valve, Xh hypotype, ii7io6f; (39, 40) 



545 



