﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER I20O, 



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 Arline formation, ioo yards southwest of the Negro Cemetery, £ mile north- 

 east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. 

 (38) Interior of a pedicle valve, X I, hypotype, 110999a. 



Little Oak formation, 2 miles north of Pelham, Bessemer Iron District (15') 

 Quadrangle, Ala. 



Plate 215 



Chonetoidea, Christiania, Sowerbyella 



A. Sowerbyella cf . S. nasuta Cooper, new species 787 



(1) Brachial view, X 3, figured specimen, 117501; (2-4) respectively side, ante- 

 rior, and posterior views, X 2, of the same specimen. 



Ward Cove formation (just above Nidiilites zone), north of U. S. High- 

 way 19, i mile west of Pounding Mill, Pounding Mill (15') Quadrangle, Va. 



B. Christiania platys Cooper, new species 861 



(5) Impression of the pedicle interior showing the pallial trunks, X 2, paratype, 

 1 1 1007; (8) exterior of a small pedicle valve, X I, paratype, iiiona; (9, 10) 

 respectively X 1 and X 2 views of a large pedicle valve, holotype, moiib. 



Edinburg formation (Cyrtonotella zone), small glen about i mile east of 

 Strasburg Junction, Strasburg (15') Quadrangle, Va. 

 (6, 7) Respectively X I and X 2 views of the brachial interior showing the ridges 

 and flatness of the valve, paratype, 11 1004. 



Edinburg formation (Cyrtonotella zone), quarry i mile east of the railroad 

 station at Strasburg Junction, Strasburg (15') Quadrangle, Va. 



C. Christiania cf . C. sub quadrat a ( Hall ) 862 



(11, 12) Pedicle and side views of an exceptionally long specimen, X 1, figured 

 specimen, 1 1 7577. 



Edinburg formation (Cyrtonotella zone), ravine at switch £ mile east of Stras- 

 burg Junction, Strasburg (15') Quadrangle, Va. 



D. Christiania trentonensis brcvis Butts = C. auriculata Cooper, new species 860 



(13) Pedicle valve, X 2, figured specimen, 97536b. 



Oranda formation, along the railroad -I mile west of Strasburg, Strasburg 

 (15') Quadrangle, Va. 



E. Christiania subquadrata (Hall ) 862 



(14-17) Respectively posterior, side, brachial, and pedicle views of a well-pre- 

 served specimen, X 2, hypotype, 117578. 



Edinburg formation (Cyrtonotella zone), dam on Shenandoah River i^ miles 

 N. 61 ° E. of Edinburg, Edinburg (15') Quadrangle, Va. 

 (18, 19) Side and pedicle views of another individual, X 2, hypotype, 123363. 

 Edinburg formation (Nidulites zone), on U. S. Highway 11, 100 yards south 

 of Battlefield Crystal Caverns entrance, 1 mile north of Strasburg, Strasburg 

 (15') Quadrangle, Va. 



F. Christiania auriculata Cooper, new species 860 



(20) Brachial view of a complete specimen, X I, holotype, 97537a; (21) posterior 



of the same specimen enlarged, X 3, to show the pseudodeltidium and apical 



foramen; (27) brachial interior, X 2, paratype, 97537b. 



Oranda formation, J mile west of Strasburg, Strasburg (15') Quadrangle, Va. 

 (23, 26) Pedicle and brachial views of a large specimen, X I, paratype, 117571; 



(28) brachial view, X 2, of same. 

 Oranda formation, junction of Virginia County Highways 691 and 692, west 



of Lantz Mills, Edinburg (15') Quadrangle, Va. 

 (22) Brachial view of another complete specimen, X 2, paratype, 111005b; 



(24, 25) respectively side and brachial views of a complete specimen, X h 



paratype, 1 17570. 



