﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER IIOI 



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 tively anterior, side, posterior, pedicle, and brachial views of a smaller but more 

 perfect specimen than the two preceding, X 3, paratype, 117073c. 



Martinsburg formation (portion with Brongniartella and referable to the 

 Salona), on Virginia County Highway 617 = 910, 0.15 mile north of Green 

 Mount Church, Broadway (15') Quadrangle, Va. 



D. Mimella similis Cooper, new species 481 



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

 plete specimen, X 2, paratype, 117047a; (28) brachial view, X 1, of the 

 preceding. 



Lincolnshire formation (Hogskin member), 0.4 mile northeast of Red Hill, 

 4i miles south-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quad- 

 rangle, Tenn. 



E. Mimella vulgaris (Raymond) 488 



(29-33) Respectively posterior, anterior, side, brachial, and pedicle views of a com- 

 plete specimen, X h hypotype, 1 17054. 



St. Martin formation, Belanger, 2 miles south of Cap St. Martin, Quebec. 

 Canada. 



F. Plectorthis obesa Cooper, new species 450 



(34-38) Respectively brachial, posterior, side, anterior, and pedicle views of a large 

 specimen, X I, holotype, 1 17020. 



Dark shale under Eureka quartzite, ridge east of Martin Ranch, Roberts 

 Mountains (i°) Quadrangle, Nev. 



G. Plectorthis pennsylvanica Cooper, new species 451 



(39-43) Respectively anterior, posterior, pedicle, side, and brachial views of a com- 

 plete specimen, X 1, holotype, 117021a; (44) brachial view, X 2, of the pre- 

 ceding. 



Rodman member of Nealmont formation, on the east side of the south quarry 

 at Sparr, Huntingdon (15') Quadrangle, Pa. 



H. Plectorthis symmetrica Cooper, new species 453 



(45-49) Respectively posterior, side, anterior, pedicle, and brachial views of an 

 exceptionally good specimen, X 2, paratype, no828d; (50) same specimen, X 1, 

 in brachial view. 



Bromide formation (Pooleville member — Oxoplecia gouldi zone), Rock Cross- 

 ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. I E., Criner 

 Hills, Carter County, Okla. 



Plate 93 

 Doleroides 



A. Doleroides winchelli Cooper, new name 466 



(1-5) Respectively pedicle, brachial, posterior, anterior, and side views, X i, of 

 a hypotype, 110578a; (6, 7) respectively Xi and X2 enlargements of the 

 pedicle interior, hypotype, 110578b. 



Decorah formation (Spechts Ferry member), Fountain, Fillmore County, 

 Minn. 



B. Doleroides gibbosus (Billings) 458 



(8-12) Respectively posterior, pedicle, anterior, brachial, and side views of a com- 

 plete specimen, hypotype, 24772a; (14) anterior part of preceding specimen, 

 X 2, showing hollow costellae. 

 Decorah formation (Spechts Ferry member), Elmira, Olmsted County, Minn. 



(13) Pedicle interior showing typical form of Doleroides muscle area, X 2, 

 hypotype, 24760. 



