﻿1068 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



Page 

 Decorah formation (Ion member ?), Mineral Point, Mineral Point (30') 

 Quadrangle, Wis. 



D. Glyptorthis inrginica Cooper, new species 379 



(19-23) Respectively pedicle, brachial, anterior, side, and posterior views, X I, of 

 the holotype, 98209a; (24) pedicle interior, showing muscle scars, X 2, paratype, 

 98209d; (25, 26, 28, 29) respectively posterior, brachial, side, and pedicle views 

 of a small but complete specimen, X I, paratype, noo82e; (33) enlargement, 

 X 6, of exterior of same; (27) brachial exterior, X 2, paratype, 110082c; (30) 

 pedicle interior showing muscle scars, X 2, paratype, noo82d; (31, 32) brachial 

 interiors, X 2, paratypes, 110082b, 110082a. 



Wardell formation, near the road beside Lloyd Carter's barn, 0.8 mile (by 

 road), northeast of the Brick School at Rye Cove, Clinchport (T.V.A. 

 188-NW) Quadrangle, Va. 



Plate 49 



Glyptorthis, Hesperorthis, Orthambonites, Productorthis, Ptychopleurella, 



Taphrorthis 



A. Productorthis americana Cooper, new species 336 



(1, 2) Respectively X2 and Xi views of the brachial exterior showing the 

 lamellae, paratype, 11 6887; (3, 4) respectively X 2 and X 1 views of the interior 

 of the preceding specimen showing the cardinalia. 



Little Oak formation, road cut on U. S. Highway 31, i mile north of Pelham, 

 Bessemer Iron District (15') Quadrangle, Ala. 



B. Taphrorthis emarginata Cooper, new species 327 



(5-9) Respectively posterior, anterior, side, pedicle, and brachial views of a com- 

 plete specimen, X 1, holotype, 116889a; (10) brachial view, X 2, of the same 

 specimen, showing details of the ornamentation. 

 Horizon and locality same as preceding. 



C. Hesperorthis anstralis Cooper, new species 345 



(11-15) Respectively brachial, anterior, side, posterior, and pedicle views of a com- 

 plete and perfect specimen, X 1, paratype, 116914. 



Wardell part of Dryden formation, North of Gap Creek, \\ miles west of 

 Arthur, Cumberland Gap (T.V.A. 153-SW) Quadrangle, Tenn. 



D. Orthambonites tennesseensis Cooper, new species 313 



(16) Complete specimen seen in brachial view, X 1, paratype, 116880; (17-21) 



respectively anterior, posterior, side, brachial, and pedicle views, X 2, of the 

 preceding. 



Little Oak formation, cut on U. S. Highway 31, \ mile north of Pelham, 

 Bessemer Iron District (15') Quadrangle, Ala. 



E. Glyptorthis sp. 2 382 



(22-26) Respectively pedicle, posterior, side, anterior, and brachial views of a com- 

 plete specimen, X 2, figured specimen, 116949a. 



Lincolnshire formation (Hogskin member), 1.7 miles northeast of Hall Cross- 

 road, Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. 



F. Glyptorthis assimilis Cooper, new species 361 



(27-31) Respectively brachial, posterior, anterior, side, and pedicle views of a large 

 perfect specimen, X I, holotype, 110013J ; (32) brachial view, X 2, of holotype. 

 Ridley formation (lower third), east side of Marshall Knobs, 5 miles south of 

 Murfreesboro, Murfreesboro (15') Quadrangle, Tenn. 



G. Glyptorthis subcircularis Cooper, new species 374 



(33-37) Respectively posterior, pedicle, side, brachial, and anterior views, X ii 

 of the holotype, 84015. 



Decorah formation (Ion member), Decorah, Iowa. 



