﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 1135 



Page 

 well-preserved specimen, X 2, hypotype, 117204b; (63) brachial view, X 1, of 

 the preceding. 



Horizon and locality same as H above. 



Plate 128 

 Ancistrorhyncha, Drepanorhyncha, Mimella, Orthorhynchula, Rhynchotrema 



A. Mimella gilberti Cooper, new species 471 



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

 the holotype, 123288a. 



Ellett formation (40 to 100 feet above Knox dolomite), west side road, 2 miles 

 south of Lusters Gate, Blacksburg (15') Quadrangle, Va. 



B. Ancistrorhyncha globularis Cooper, new species 624 



(6-9) Respectively anterior, side, pedicle, and brachial views, X 2, of the holotype, 

 111278a. 



Bromide formation (Pooleville member), 4 miles west and 2 miles south of 

 Davis, Murray County, Okla. 



C. Ancistrorhyncha ? vacua Cooper, new species 625 



(10-13) Respectively anterior, side, brachial, and pedicle views, X 2, of the 

 holotype, 111282a. 



Mingan formation (zone A5), Bald Island, Mingan group, St. Lawrence 

 River, Quebec, Canada. 



D. Ancistrorhyncha missouriensis Cooper, new species 624 



(14, 16-19) Respectively anterior, pedicle, posterior, side, and pedicle views, X 2, 

 of the holotype, 111284a; (15) brachial view, X I, of the holotype. 



Rock Levee formation (lower), junction of Missouri Highway 74 and U. S. 

 Highway 61, Rock Levee, NW. corner sec. 24, T. 30 N., R. 13 E., 3^ miles 

 southwest of Cape Girardeau, Cape Girardeau (15') Quadrangle, Mo. 



E. Drepanorhyncha ottawaensis (Billings) 628 



(21, 22, 24) Respectively anterior, pedicle, and brachial views of a complete speci- 

 men, X 1, lectotype, G.S.C. H43g; (26) side view of another individual, X h 

 paratype, G.S.C. H43e; (23) interior seen from the side, X 1, paratype, G.S.C. 

 1143I1; (28, 31) same as preceding but tilted to show long brachial processes 

 in two views, X2; (20, 27) brachial and pedicle interiors, showing crural bases 

 and dental plates, X 2, hypotype, 85338a, b; (29) brachial cardinalia, X 3, same 

 as preceding ; (25, 30) normal and tilted views of a pedicle interior showing the 

 long dental plates, X 2, paratype, G.S.C. 1143? 

 Rockland formation, Paquette Rapids, Ontario, Canada. 



F. Orthorhynchula linneyi (James) 669 



(33» 36) Side and posterior views of a complete specimen, X 1, showing interarea, 

 figured specimen, 87042a. 



Fairmount formation, 1 mile north of Paint Lick, Garrard County, Ky. 

 (34) Brachial interior, X 1, figured specimen, 111352; (35, 32) normal and tilted 

 views of the preceding, X 2, showing crural bases and cardinal process for com- 

 parison with Drepanorhyncha. 



Perryville formation, Harrodsburg, Mercer County, Ky. 



G. Drepanorhyncha ambigua (Hall) 627 



(37) Exterior of the pedicle valve, X I, hypotype, 111344a; (38, 39) side and 

 exterior views of the brachial valve, X 1, hypotype, 111344b. 



Trenton group (Hull formation), Harris' (Pierce's) Farm, east of Middle- 

 ville, Little Falls (15') Quadrangle, N. Y. 



H. Rhynchotrema wisconsinense Fenton and Fenton 630 



(40-44) Respectively side, anterior, posterior, pedicle, and brachial views of a per- 



