﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 1 137 



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Station Creek, $ mile south of U. S. Highway 58, 2 miles east of Cumberland 

 Gap, Wheeler (T.V.A. 153-SE) Quadrangle, Va. 



I. Rostricellula plena (Hall) 645 



(39-43) Respectively posterior, pedicle, brachial, anterior, and side views of a com- 

 plete specimen, X I, hypotype 111510; (44-48) respectively posterior, anterior, 

 side, pedicle, and brachial views of another complete specimen, X 1, hypotype, 



111509- 



Valcour formation, Valcour Island, Lake Champlain, Plattsburg (15') Quad- 

 rangle, N. Y. 

 (49-53) Respectively posterior, pedicle, side, brachial, and anterior views of a 

 large individual, X I, hypotype, 111497a. 



Aylmer formation, Butlers Quarry, Z2 miles west of l'Orignal, Ontario, 

 Canada. 



Plate 130 



Lepidocyclus, Rhynchotrema, Rostricellula 



A. Rhynchotrema kentnekiense Fenton and Fenton 629 



(1-5) Respectively pedicle, anterior, posterior, brachial, and side views of a com- 

 plete specimen, X I, hypotype, 117211a; (6) pedicle interior tilted to show dental 

 plates, X 2, paratype, 117211b; (7) brachial interior, X 2, tilted to show septum, 

 cardinal process, and crural bases, hypotype, 117211c; (8) brachial interior of 

 preceding view, X 3. showing crural bases, crura, and cardinal process. 

 Trenton formation, Paris, Bourbon County, Ky. 



B. Rostricellula costata Cooper, new species 636 



(9-13) Respectively pedicle, side, anterior, posterior, and brachial views of a com- 

 plete specimen, X 2, holotype, 111460a; (14-17) respectively pedicle, side, ante- 

 rior, and brachial views, X 3, of the preceding. 



Lenoir formation (30 to 70 feet above ore-bed), 2 miles west-southwest of 

 Pratt Ferry, Blocton (15') Quadrangle, Ala. 



C. Rostricellula plena plicifera (Hall) 646 



(18, 19) Side and brachial views of Hall's type, X 1, A.M.N.H. 533. 

 Valcour formation, Chazy, Rouses Point (15') Quadrangle, N. Y. 



D. Rostricellula plena altilis ( Hall ) 646 



(20-24) Respectively posterior, anterior, side, pedicle, and brachial views of Hall's 

 type, X I, A.M.N.H. 532/1. 



Horizon and locality same as preceding. 



E. Rostricellula raymondi Cooper, new species 647 



(25-29) Respectively pedicle, posterior, side, anterior, and brachial views of a 

 complete specimen, X I, paratype, Carnegie Mus. 2174; (30-34) respectively 

 side, posterior, pedicle, anterior, and brachial views of a specimen larger than 

 the preceding, X I, holotype, Carnegie Mus. 2176. 



St. Martin formation, St. Martins Junction, near Montreal, Quebec, Canada. 



F. Rostricellula raymondi Cooper, new species 647 



(35) Posterior view of an inner filling showing septum, dental plates, and filling 

 of cruralium without a cardinal process, X 3, paratype, Carnegie Mus. 2175. 



Horizon and locality same as preceding. 



G. Lepidocyclus sp. 1 658 



(36) Brachial interior, X 2, showing cardinal process, crura with hooks, sockets 

 and socket ridges, figured specimen, 117209a; (37) pedicle interior showing 

 "concave deltidial plates," small foramen, teeth, and large muscle area, X 2, 

 figured specimen, 117209b. 



Fernvale formation, quarry at Lawrence, southwest of Ada, Pontotoc County, 

 Okla. 



