﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER I06l 



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 Little Oak formation, on U. S. Highway 31, north of the bridge, Pelham, 

 Bessemer Iron District (15') Quadrangle, Ala. 

 (3-5, 7) Side, brachial, pedicle, and posterior views of a small but complete indi- 

 vidual, X 2, para type, 116891a; (8) fragment of brachial interior showing car- 

 dinalia, X 3, paratype, n68oid; (10) pedicle interior showing muscle scars, 

 X 2, paratype, 116891c. 



Arline formation (lower part of Chris tiania beds), 100 yards southwest of the 

 Negro Cemetery, J mile northeast of Friendsville, Concord (T.V.A. 138-SW) 

 Quadrangle, Tenn. 



B. Cyrtonotella snbquadrata Cooper, new species 3 2 4 



(11) Brachial view of a large, well-preserved specimen, X 1, holotype, 11 1803. 

 Benbolt formation (Echinosphaerites beds), west slope of hill, \ mile east of 

 Cedar Point School, Hilton (T.V.A. 197-NW) Quadrangle, Va. 



C. Cyrtonotella virginiensis Butts 325 



(12) Brachial interior showing cardinalia, X 2, hypotype, 109865a; (18) same, 

 X 1 ; (14) brachial exterior of an imperfect specimen, X 1, hypotype, 109865c. 



Botetourt formation, junction of Virginia Highways 311 and 114, \ mile 

 southwest of Catawba, Salem (15') Quadrangle, Va. 



(13) Pedicle exterior, X I, hypotype, 109868c; (15, 16) respectively X 1 and X 2, 

 enlargements of the brachial interior, hypotype, 109868a; (17) pedicle interior, 

 X 1, hypotype, 109868b; (20) delthyrial area, X 2, of preceding. 



Arline formation, quarry on east side of Marion, Marion (T.V.A. 218-SE) 

 Quadrangle, Va. 

 (19) Exfoliated pedicle valve tilted to show umbonal region and impression of 

 muscle scars, X 1, hypotype, 109870c. 



Botetourt formation, 5 miles east-northeast of Catawba, Salem (15') Quad- 

 rangle, Va. 

 (21) Partially exfoliated pedicle valve showing outline, X T , paratype, 109863. 

 Botetourt formation, 4 miles east-northeast of Catawba, Salem (15') Quad- 

 rangle, Va. 



D. Cyrtonotella cf. C. virginiensis Butts 325 



(23, 24) Interior and exterior views of the brachial valve, X I, figured specimen, 

 109872; (25) same, X2; (22) interarea of preceding, X 2, showing cardinal 

 process; (26) details of cardinalia of same, X 3, showing small, nearly buried 

 brachiophores and muscle scars. 



Arline formation, north side of wagon road in glade, % mile southeast of 

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



Plate 41 

 Cyrtonotella 



A. Cyrtonotella jasciculata Cooper, new species 320 



(1) Brachial exterior, X 1, holotype, 110356; (2, 3) respectively brachial and 

 pedicle views, X 2, of the holotype. 



Benbolt formation, 4 miles east-northeast of Gate City, Gate City (T.V.A. 

 188-NE) Quadrangle, Va. 



B. Cyrtonotella minor Cooper, new species 323 



(4) Brachial view, X I, of the holotype, 116900a; (5-7) pedicle, brachial, and 

 posterior views, X 2, of the holotype. 



Lincolnshire formation, east side of the road i mile north of Eidson, Kyles 

 Ford (T.V.A. 170-SE) Quadrangle, Tenn. 



C. Cyrtonotella magna Cooper, new species 322 



(8-10) Respectively pedicle, side, and brachial views of a medium-sized specimen, 

 X i> paratype, 116899a; (n) same as preceding, X 2. 



