﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 1177 



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B. Ptychoglyptus virginiensis Willard 818 



(3, 4) Respectively X 1 and X 2 enlargements of an imperfect specimen, hypotype, 

 1 1 1052. 



Edinburg formation (Cyrtonotella zone), south side tracks, -«- mile east of 

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



C. Ptychoglyptus ? matura Cooper, new species 817 



(5, 6) Respectively X I and X 2 enlargements of the holotype, 111061. 



Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15') Quad- 

 rangle, Ala. 



D. Ptychoglyptus pulchrus Butts = P. virginiensis Willard 818 



(7) Pedicle view, X 3, of the holotype, 71475. 

 Horizon and locality same as preceding. 



E. Ptychoglyptus virginiensis Willard 818 



(8, 9) Exterior and interior of a nearly perfect specimen, X 3, hypotype, 98231b; 



(10) brachial interior of an imperfect specimen, X 4, hypotype, 98231a; (11, 16) 



another pedicle exterior and interior showing the ornamentation and dental 



plates, X 3, hypotype, 98231b! ; (12) another fragmentary brachial interior, X 4, 



showing the cardinalia, hypotype, 98231a!. 



Edinburg formation (Liberty Hall facies, base), 1.8 miles S. 4 W. of Bethel 



Church, 5.9 miles due east of Harrisonburg, Harrisonburg (15') Quadrangle, 



Va. 

 (13, 14, 17) Interior of three imperfect brachial valves, X 3, showing the Sower- 



byella-like cardinalia, hypotypes, 111042b, 111042a, and 111042c; (15) brachial 



view of a large specimen, X 2, hypotype, 11 1056. 

 Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, 



Maccrady (T.V.A. 218-NW) Quadrangle, Va. 



Plate 175 

 Glyptambonites 



A. Glyptambonites glyptus Cooper, new species 713 



(I) Brachial interior, X 3, showing median septum, and brachiophores, paratype, 

 117386c; (2) another fragmentary brachial interior, X 3, showing median septum 

 and slender brachiophores, paratype, H7386d; (3) plasticine replica of the 

 pedicle exterior, X 1, paratype, 123250b; (8) same view as preceding, X2; 

 (4) posterior of the pedicle interior showing the muscle scars and pseudo- 

 deltidium, X 3i paratype, 117386a; (5) exterior of an imperfect pedicle valve, 

 X 3, showing details of the ornamentation, paratype, 117386b; (7) pedicle 

 valve, X 1, holotype, 117383a. 



Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, 

 Maccrady (T.V.A. 218-NW) Quadrangle, Va. 

 (6) Exterior of an imperfect specimen seen in brachial view, X 2, paratype, 

 117385b. 



Effna formation, McNutt Quarry, 12 miles southwest of Bland, Burkes 

 Garden (15') Quadrangle, Va. 



B. Glyptambonites musculosus Cooper, new species 715 



(9, 10) Respectively X 1 and X 2 views of a pedicle valve, showing the ornamen- 

 tation, paratype, 117391. 



Oranda formation, along U. S. Highway 11, i^ to 2 miles southwest of Stras- 

 burg, Strasburg (15') Quadrangle, Va. 



C. Glyptambonites musculosus Cooper, new species 715 



(II) Plasticine replica of the pedicle exterior, X I, holotype, 117390c; (12, 13) 

 respectively X 1 and X 2 enlargements of an impression of the pedicle interior 



