﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER I167 



Pkge 

 valve showing swellings supporting brachiophores, and lobate cardinal process, 

 X 3, paratype, 117350b. 



Benbolt formation (lower), south side of Mount Hagan School, Hilton 

 (T.V.A. 197-NW) Quadrangle, Va. 



(41) Pedicle interior, showing deep and elongate notothyrial cavity and diductor 

 scars extending anterior to it, X 2, paratype, 1 17348a. 



Benbolt formation (lower), 0.2 mile south of the middle fork of Moccasin 

 Creek, i£ miles due north of Hansonville, Hansonville (T.V.A. 205-SW) Quad- 

 rangle, Va. 



(42) Brachial interior, X 2, showing thickenings on brachiophores and short- 

 shafted cardinal process, paratype, 117347b. 



Benbolt (lower), east bank of a sinkhole, 300 feet south of Lakeview Church, 

 on Virginia Highway 71, Moll Creek (T.V.A. 196-SE) Quadrangle, Va. 



Plate 161 

 Cristiferina, Dalmanella, Onniella 



A. Dalmanella sulcata Cooper, new species 951 



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

 adult, X 1, paratype, 117365b; (6) another complete specimen, X 1, holotype, 

 i J 7365a; (7-11) respectively side, posterior, anterior, pedicle, and brachial views, 

 X 2, of the holotype; (12) interior of the pedicle valve showing muscle region, 

 X 2, paratype, 123239a; (13) another pedicle interior showing dental plates, 

 X 3, paratype, 117365b; (14) interior of the brachial valve, X 2, paratype, 

 1 1 7365 f; (15) interior of another brachial valve, X 2, showing short median 

 ridge, paratype, 117365c; (16) interior of the brachial valve showing notothyrial 

 chamber and cardinal process, X 3, paratype, 1173651. 



Hermitage formation (base), on the east side of U. S. Highways 70S and 41, 

 4.2 miles southeast of Nashville, Hermitage (15') Quadrangle, Tenn. 



B. Dalmanella rara Cooper, new species 949 



(17) Brachial view, X 1, of the holotype, 117362c; (18-22) respectively posterior, 

 anterior, brachial, pedicle, and side views, X 2, of the holotype. 



Curdsville formation, on Tennessee Highway 33, S2 miles northeast of May- 

 nardville, Maynardville (T.V.A. 145-SE) Quadrangle, Tenn. 



C. Onniella ? planoconvexa Cooper, new species 955 



(23-27) Respectively pedicle, brachial, side, posterior, and anterior views, X 1, 

 of the paratype, 117370a; (28) another complete specimen, X 1, holotype, 

 117370b; (29-31, 33, 34) respectively posterior, anterior, pedicle, brachial, and 

 side views, X 2, of the holotype ; (32) another complete specimen, X 2, paratype, 

 11 7365c; (35) impression of the interior of a brachial valve showing slots 

 formed by brachial process, X 2, paratype, H736sd; (36) interior of the brachial 

 valve showing cardinalia, X 3, paratype, 117365c 



Hermitage formation (base), on Tennessee Highway 53, 0.7 to 1.5 miles south 

 of Woodbury, Woodbury (15') Quadrangle, Tenn. 



D. Cristiferina cristifera Cooper, new species 963 



(37) Slab showing impressions of the interior of a pedicle valve and four brachial 

 valves, X I, paratype, H7357b; (38) replica of the brachial interior, X 2, pre- 

 pared from mold in upper left hand of preceding figure. 



Oranda formation, on the Bowman Farm, 0.3 miles east of U. S. Highway n, 

 1 mile southwest of Woodstock, Edinburg (15') Quadrangle, Va. 



