﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER III7 



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G. Camerella ? primigenia (Bradley) 578 



(32, 33) Side and exterior views of a pedicle valve, X 1, hypotype, 111175b; 

 (34, 35) exterior and side views of a brachial valve, X 1, hypotype, 111175a; 

 (36-38) pedicle, side, and brachial views of a small, nearly complete specimen, 

 X 2, hypotype, 111177. 



Kimmswick formation (12 to 14 feet above the Izard limestone), 2^ miles 

 above the mouth of Cave Creek, about 7 to 8 miles north of Batesville, 

 Batesville (30') Quadrangle, Ark. 



Plate iio 

 Camerella, Liricamera 



A. Camerella immatura Cooper, new species 570 



(1-4) Respectively side, anterior, pedicle, and brachial views, X 2, of the holo- 

 type, 117137; (5) brachial view, X 1, of the holotype. 



Chatham Hill formation, Grayson Farm, 4 to 5 miles southeast of Bland, 

 Bland County, Va. 



B. Camerella various Billings 583 



(6, 7) Respectively X 1 and X 2 enlargements of the pedicle valve of a narrow 

 specimen, paratype, G.S.C. 1038a. 



Mingan formation, Mingan Islands, St. Lawrence River, Canada. 



C. Camerella volborthi Billings 585 



(8-1 1 ) Respectively anterior, pedicle, brachial, and side views of a complete speci- 

 men, X 1, hypotype, G.S.C. (not numbered). 



Rockland formation, Paquette Rapids, Ottawa River, Quebec, Canada. 



D. Camerella varians Billings 583 



(12-15) Respectively pedicle, brachial, and side views of a wide individual, X I, 

 lectotype, G.S.C. 1038; (15) pedicle view of lectotype, X 2. 

 Horizon and locality same as B above. 



E. Camerella varians Billings 583 



(16-18) Respectively pedicle, anterior, and brachial views of a complete specimen, 

 X 1, hypotype, 111163; (19-21) pedicle, brachial, and side views, X 2, of the 

 preceding. 



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

 Quadrangle, N. Y. 



F. Camerella triangnlata Cooper, new species 581 



(22-25, 29) Respectively pedicle, anterior, side, brachial, and posterior views of 

 a complete specimen, X I, holotype, 111162; (26-28, 30) respectively anterior, 

 brachial, side, and pedicle views, X 2, of the preceding. 

 Lenoir formation, Knoxville, Term. 

 (3 r "3S) Respectively anterior, side, posterior, pedicle, and brachial views of a 

 complete specimen, X 2, paratype, 117145. 



Lenoir formation (Billingsaria zone), | mile northeast of Friendsville, Louis- 

 ville (T.V.A. 138-SE) Quadrangle, Tenn. 



G. Camerella ventricosa Cooper, new species 584 



(36-40) Respectively brachial, side, pedicle, posterior, and anterior views of a 

 large, rotund individual, X I, holotype, 111170a; (41-45) respectively brachial, 

 posterior, side, anterior, and pedicle views, X 2, of the preceding ; (46-49) re- 

 spectively side, anterior, posterior, and brachial views of an individual narrower 

 than the preceding, X l, paratype, ini7od. 



Crown Point formation (loose but derived from zone 3, division B of Brainerd 

 and Seeley), Chazy, Plattsburg (15') Quadrangle, N. Y. 



