﻿IO84 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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B. Chaulistomella magna ( Schuchert and Cooper) 438 



(11, 12, 16, 17, 22) Respectively brachial, pedicle, posterior, anterior, and side 

 views of a fine, complete specimen, X 1, hypotype, 110539c; (23) exterior, X 2, 

 of preceding; (13, 14, 18, 19, 20) respectively brachial, pedicle, posterior, anterior, 

 and side views of another complete specimen, X I, hypotype, 1 10545; (15) bra- 

 chial interior, X I, paratype, 116999b; (21) pedicle interior, X iz, showing 

 superb development of pallial trunks, paratype, 110543a. 



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. 



Plate 71 



Camerella, Chaulistomella, Dinorthis, Multicostella, Plectorthis, Valcourea 



A. Multicostella sulcata Cooper, new species 428 



(1-3) Respectively pedicle, side, and brachial views of an incomplete specimen 

 showing the strong fold and sulcus, X ii holotype, 1 16993. 



Bromide formation (Mountain Lake member — Valcourea transversa bed), on 

 Spring Creek, sec. 17, T. 2 S., R. 1 W., Murray County, Okla. 

 (4) Another imperfect pedicle exterior, X I, paratype, 1 10459. 



Bromide formation (Mountain Lake member), NE. corner sec. 1, T. 2 S., 

 R. 2 W., 3 miles east of Pooleville, Murray County, Okla. 



B. Chaulistomella crassa Cooper, new species 434 



(5-9) Respectively posterior, anterior, side, brachial, and pedicle views, X 1, of 



the holotype, 116996a; (9a) interior of the pedicle valve, X 1, paratype, 116996b. 



Bromide formation (Mountain Lake member — just above bryozoan bed or 



Mimclla zone), on Oklahoma Highway 99, 3 miles south of Fittstown, Pontotoc 



County, Okla. 



C. Valcourea ventrocarinata (Butts) 414 



(10-14) Respectively posterior, anterior, side, pedicle, and brachial views of a com- 

 plete, nearly perfect specimen, X 1, hypotype, 117992a. 



Little Oak formation, junction of Bailey Gap and Cahaba Valley roads, 

 if miles northeast of Newhope Church, SW^SW^ sec. 13, T. 19 S., R. 2 W., 

 Vandiver (15') Quadrangle, Ala. 



D. Multicostella fasciculata (Butts) 418 



(15-19) Respectively anterior, posterior, brachial, pedicle, and side views of a 

 nearly complete specimen, X l> hypotype, 116987; (20) brachial view of same, 

 X 2, showing ornamentation. 

 Horizon and locality same as preceding. 



E. Plectorthis australis Cooper, new species 447 



(21-25) Respectively pedicle, side, anterior, posterior, and brachial views, X I, of 

 the holotype, a complete specimen, 117019a; (26) brachial view, X-2, of the 

 holotype, showing the ribbing in detail. 



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

 Bessemer Iron District (15') Quadrangle, Ala. 



F. Camerella oklahomensis Cooper, new species 574 



(27-31) Respectively posterior, brachial, pedicle, anterior, and side views, X 1, of 

 the holotype, 11 7993; (32-35) respectively side, anterior, brachial, and pedicle 

 views, X 2, of the holotype. 



Bromide formation (Pooleville member — 50 feet below the top), 0.1 mile 

 southeast of Observation Point on the Scenic Road to Falls Creek, about 1 mile 

 southeast of U. S. Highway 77, Murray County, Okla. 



