﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 121 1 



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 rior part of the brachial valve showing the cardinalia, floor plates, and median 

 ridge, X 3, paratype, 108202c. 



Arline formation (middle to upper), both sides of wagon road in glade, i mile 

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



Plate 217 

 Dactylogonia, Murinella, Genus and Species Undet. 



A. Murinella sp. 2 851 



(1) Pedicle view of a large specimen, X i> figured specimen, 117648a. 



Tulip Creek formation, west branch of Sycamore Creek, sec. 27, T. 3 S., 

 R. 4 E., Johnston County, Okla. 



B. Murinella parva Cooper, new species 848 



(2, 3) Brachial and pedicle views of a complete specimen, X 2, holotype, 1 17643. 

 Whistle Creek formation, on U. S. Highway 60, 100 yards southeast of 

 Whistle Creek, 2 miles northwest of Lexington, Lexington (15') Quadrangle, 

 Va. 



C. Dactylogonia transversa Cooper, new species 836 



(4) View of the brachial interior from the ventral side, X 1, and showing the 

 floor plates, holotype, 117604b; (5) brachial view, X 1, of the preceding 

 specimen. 



Botetourt formation, between U.S. Highway 60 and Whistle Creek, 1 mile 

 northwest of Lexington, Lexington (15') Quadrangle, Va. 



D. Genus and species undet 1006 



(6) Posterior of the pedicle valve showing interarea and pseudodeltidium, X i, 

 figured specimen, 11 7066; (7) pedicle view of the same specimen, X t, showing 

 ornamentation. 



Arline formation (middle), north side of wagon road in glade, \ mile south- 

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



E. Dactylogonia sp. 3 838 



(8-10) Pedicle, side, and brachial views of a complete specimen, X 3, figured 

 specimen, 1 17608. 



Benbolt formation, west of Rye Cove, Clinchport (T.V.A. 188-NW) Quad- 

 rangle, Va. 



F. Dactylogonia marmorata Cooper, new species 831 



(11, 12) Exterior and anterior views of a pedicle valve, X 2, paratype, 1 23263d ; 

 (13) exterior view of another pedicle valve, X 2, holotype, 123265b; (14) exte- 

 rior of a young pedicle valve, X 2, paratype, 123265a; (15) plasticine replica of 

 the brachial exterior, X 2, mold paratype, 123265c. 



Murat formation, 2 miles northwest of Lexington, Lexington (15') Quad- 

 rangle, Va. 



G. Dactylogonia sp. 7 839 



(16, 18) Respectively X 1 and X2 enlargements of the brachial view of a small 

 specimen, figured specimen, 117612a; (17, 19) respectively Xi and X2 en- 

 largements of another but larger specimen seen from the brachial side, figured 

 specimen, 117612b. 



Whistle Creek formation, i\ miles northwest of Lexington, Lexington (15') 

 Quadrangle, Va. 



H. Murinella cancellata Cooper, new species 846 



(20-22) Brachial, side, and pedicle views of a large, complete specimen, X 1, 

 holotype, 11 7631. 



Benbolt formation, west of Rye Cove, Clinchport (T.V.A. 188-NW) Quad- 

 rangle, Va. 



