﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 1210, 



Page 

 Lower Ward Cove formation, § mile southwest of Mount Eager Church, 

 Hogskin Valley, Powder Springs (T.V.A. 154-SW) Quadrangle, Tenn. 



B. Teratelasma neumani Cooper, new species 824 



(5-7) Respectively brachial, posterior, and pedicle views of a complete interior 

 filling (steinkern), showing median septum, adductor ridges, and pits of the long 

 adductor ridges on the side of the pedicle valve, X 3. holotype, ii7938d (plug 

 of pedicle foramen may be seen in posterior view) ; (8) plasticine replica of the 

 brachial valve exterior, X 3, paratype, U7938g; (9) plasticine replica of another 

 brachial valve exterior showing ornamentation in more detail, X 3, paratype, 

 117938c; (10, 11) impression of the interior of the brachial valve showing pits 

 of cardinalia and septa, and plasticine replica of the interior prepared from it, 

 X 3, paratype, 117938m; (12) impression of the interior of the pedicle valve 

 showing muscle scars and pits at apex, representing prongs of cardinal process, 

 X3, paratype, H7938n; (13) exterior of another brachial valve, X 2, paratype, 

 1 17938-0; (14, 15) impression of the brachial interior and the plasticine replica 

 prepared from it, X 3, paratype, H7938J ; (16, 17) impression of the interior 

 of the pedicle valve and the plasticine replica of the interior prepared from it, 

 X3, showing dental plates, paratype, 117938-I; (18) impression of the interior 

 of the brachial valve broken along the median septum and showing the strong 

 elevation of that structure, X 3, paratype, ii7938q; (19, 20) impression of the 

 interior of a pedicle valve and the plasticine replica of the interior prepared 

 from it, X 3, paratype, 117938k; (21) plasticine replica of the interior of a bra- 

 chial valve, X 3, paratype, 117938c; (22) plasticine replica of the exterior of the 

 pedicle valve, X 3, paratype, H7938f; (23) another plasticine replica of the 

 pedicle valve exterior, X 3, counterpart to fig. 12. 



Sevier formation (Benbolt equivalent), 0.53 mile east-southeast of Old Kagley 

 Church, Binfield (T.V.A. 139-NE) Quadrangle, Tenn. 



Plate 226 

 Dactylogonia, Murinella 



A. Murinella sp. 3 851 



(1) Plasticine replica of the brachial exterior, X I, figured specimen, 11 7649; 

 (2) plasticine replica of the brachial interior, X 2, of the preceding specimen. 



Little Oak formation, 1 mile north of Pelham, Bessemer Iron District (15') 

 Quadrangle, Ala. 



B. Murinella sp. 1 850 



(3) Impression of the pedicle interior, X I, figured specimen, 117647; (4) poste- 

 rior of preceding, X 2, showing muscle scars. 



Murfreesboro formation, east edge of Murfreesboro, Murfreesboro (15') 

 Quadrangle, Tenn. 



C. Dactylogonia incrassata (Hall) 828 



(5) Brachial view, X I, of the hypotype, 117590a; (6-9) respectively side, pedicle, 

 posterior, and brachial views, X 2, of the same hypotype. 



Crown Point formation, Sloop Bay, Valcour Island, Lake Champlain, Platts- 

 burg (15') Quadrangle, N. Y. 



D. Murinella muralis Cooper, new species 846 



(10) Exterior of the pedicle valve, X h holotype, 117636a; (11, 12) two views 

 of the interior of the preceding pedicle valve, X 2, one showing pseudodeltidium 

 and interarea and the other the muscle area; (13) exterior of another pedicle 

 valve larger than the preceding, X I, paratype, 117636b; (16) posterior part of 

 an imperfect specimen showing the interarea and pseudodeltidium, X 2, para- 

 type, ii7636d; (24) exterior of a large brachial valve, X I, paratype, 117636c; 



