﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER IO37 



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 Arline formation, Sevierville Pike, 3 miles southeast of Knoxville, Knoxville 

 (T.V.A. 147-NW) Quadrangle, Tenn. 



D. Schizambon lineatum Cooper, new species 267 



(22, 23) Brachial valve, X 1, X 2, holotype, 109671. 



Wardell formation, 1 mile northeast of Rye Cove, Clinchport (T.V.A. 

 188-NW) Quadrangle, Va. 



Plate 15 

 Schizambon 



A. Schisambon macrothyris Cooper, new species 267 



(2-4) Brachial, pedicle, and side views, X *» of the holotype, 98204a; (1) pedicle 

 view, X 2, of holotype. 



Wardell formation, Lloyd Carter's barn, -J mile by road northeast of school at 

 Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. 



B. Schizambon duplicimuratum Hudson 266 



(5, 6) Pedicle and brachial valves, X 4, A.M.N.H. (no number). 



Crown Point formation, Valcour Island, Lake Champlain, Plattsburg (15') 

 Quadrangle, N. Y. 



C. Schisambon perspinosum Cooper, new species 268 



(7) Brachial interior, X 2, paratype, 109678. 



Bromide formation (Pooleville member — zone 5), Spring Creek, Ni sec. 17, 

 T. 2 S., R. 1 W., Murray County, Okla. 



(8) Pedicle exterior, X 2, holotype, 109681c; (9, 11) respectively side and exte- 

 rior views of a brachial valve, X 1, paratype, I0968id; (16) same as preceding, 

 enlarged X 2; (10, 14) pedicle valve, X 2, X 1, paratype, 71891a; (13) brachial 

 valve, X 1, paratype, 109681a; (17) enlargement, X 4, of part of preceding 

 showing long spines; (15) brachial valve, X 2, paratype, 109680. 



Bromide formation (Pooleville member — Oxoplecia gouldi zone), Rock Cross- 

 ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, 

 Carter County, Okla. 

 (12) Interior of a pedicle valve showing track of apical plate, X 2, figured speci- 

 men, 109688. 



Near top of brownish granular beds of Bromide formation (Mountain Lake 

 member), same locality as preceding. 



D. Schizambon hirsutum Cooper, new species 266 



(18, 19) Brachial valve, X 1 and X 3, holotype, 109670a. 



Murat formation, along road and ridge, Whistle Creek, 2 miles northwest of 

 Lexington, Lexington (15') Quadrangle, Va. 



E. Schizambon cuneatum Willard 265 



(20, 22) Brachial valve, X 2 and X L showing long spines, holotype, 109668. 



Effna formation, McNutt Quarry, 12 miles southwest of Bland, Burkes Gar- 

 den (15') Quadrangle, Va. 

 (21) Exterior of the pedicle valve, X lb, cast of holotype, M.C.Z. 8588. 



Horizon and locality same as preceding. 



Plate 16 

 conotreta, spondylotreta 



A. Conotreta ? alta Cooper, new species 248 



(1-3) Posterior, apical, and anterior views of the pedicle valve, X 4. holotype, 

 109715. 



