﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 1213 



Page 

 Lenoir formation (basal 13 feet above the Mosheim limestone), south side of 

 Friends Church, north corner of Friendsville, Concord (T.V.A. 138-SW) Quad- 

 rangle, Tenn. 



E. Dactylogonia sp. 6 839 



(15, 16) Respectively X 1 and X2 enlargements of a pedicle valve with well- 

 preserved ornamentation, figured specimen, 117611a. 



Probably Benbolt formation (0 to 30 feet above the 225-foot marble), section 

 north of Eidson, Kyles Ford (T.V.A. 170-SE) Quadrangle, Tenn. 



F. Dactylogonia sculpturata Cooper, new species 835 



(17, 18) Brachial and side views of a complete specimen, X i> paratype, 117598b; 

 (19-21) pedicle, posterior, and brachial views, X 2, of the same specimen. 



Bromide formation (Mountain Lake member), McLish Ranch, sec. 24, T. 1 S., 

 R. 7 E., Johnston County, Okla. 



G. Dactylogonia altemata Cooper, new species 825 



(22, 23) Pedicle and anterior views, X h of a well-preserved pedicle valve, para- 

 type, 117581a; (24) pedicle view, X 2, of the preceding specimen ; (25) posterior 

 view of a complete specimen showing the pedicle foramen, chilidium, and inter- 

 areas, X 3, holotype, 117581c; (28) brachial view, X 2, of the preceding speci- 

 men ; (26, 29) pedicle and brachial views of a young specimen not completely 

 geniculated, X 2, paratype, 117581b; (27) brachial view of a complete speci- 

 men, X 1, paratype, 117581c; (30) interior of the brachial valve, X 2, paratype, 

 H758id. 



Lenoir formation (shaly band near top of granular beds underlying the 

 Mosheim limestone), southwest side of the cemetery behind Friends Church, 

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



Plate 219 

 Dactylogonia, Leptellina 



A. Dactylogonia subaequicostcllata Cooper, new species 836 



(1) Brachial interior showing the two sets of floor plates, X 3, paratype, 117601c. 

 Bromide formation (Mountain Lake member), McLish Ranch, sec. 24, T. 1 S., 

 R. 7 E., Johnston County, Okla. 



B. Dactylogonia extensa Cooper, new species 827 



(2, 3) Exterior and side views of the pedicle valve, X l, holotype, 117584b; 

 (4, 5) respectively X 1 and X 2 enlargements of a somewhat exfoliated brachial 

 valve, paratype, 117584a. 



Mingan formation (lower third), Bald Island, Mingan Group, St. Lawrence 

 River. 



C. Dactylogonia subaequicostcllata Cooper, new species 836 



(6-8) Posterior, brachial, and pedicle views of a complete specimen, showing 

 foramen and pseudodeltidium, X 2, holotype, 1 17602; (9) pedicle view, X I, of 

 the same specimen. 



Bromide formation (Mountain Lake member), 2 miles southeast of McLish 

 Ranch, Johnston County, Okla. 



D. Dactylogonia sculpturata Cooper, new species 835 



(10) Brachial view of a large, complete specimen, X I, holotype, 117598a. 

 Horizon and locality same as A above. 



E. Dactylogonia geniculata Ulrich and Cooper 827 



( ii ) Pedicle interior showing well the outline of the muscle area, X 2, hypotype, 

 117585c. 



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

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



