﻿PART II CHAZYAN AND RELATED BRACHIOPODS — COOPER 1125 



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B. Parallelelasma pentagonum Cooper, new species 614 



(11, 12) Exterior and side views of the brachial valve with outline of exterior 

 restored, X 2, paratype, 117155b; (13) fragment of the pedicle valve preserving 

 the spondylium and teeth, X 6, paratype, H7i55f ; (14) another pedicle fragment 

 showing the spondylium and the median septum, ca. X 5, paratype, 117155c; 

 (15) the preceding specimen, X 3, in another position; (16, 17) fragment of 

 the brachial interior in normal view and tilted to the side to show the long 

 brachiophore plates, X 3, paratype, 117155c; (18, 19) normal and side views of 

 another brachial interior showing the elongated plates, X 3, paratype, H/155S- 

 Horizon and locality same as preceding. 



C. Camerella costellata Cooper, new species 5°5 



(20-24) Respectively posterior, anterior, side, pedicle, and brachial views, X I, 

 of the holotype, 117131; (25-29) respectively posterior, side, anterior, brachial, 

 and pedicle views, X 2, of the holotype. 



Elway formation (near top), | mile southwest of Mount Eager Church and 

 0.2 mile northwest of the road along a farm lane, Powder Springs (T.V.A. 

 154-SW) Quadrangle, Tenn. 



D. Parastrophina bilobata Cooper, new species 605 



(30-33) Respectively exterior, side, anterior, and interior views, of the pedicle 

 valve, X 3, paratype 117166c; (34) interior of another pedicle valve showing 

 the spondylium and septum, X 3, paratype, H7i66d; (35, 36, 38) side, exterior, 

 and interior of a brachial valve, X 3, paratype, H7i66h; (37) exterior of an- 

 other brachial valve, X 3, paratype, 117166J; (39) brachial interior, X 4, show- 

 ing the cruralium and alate plates, paratype, 117166a; (40) interior of an old and 

 thickened brachial valve, X 3, paratype, 117166c; (41) cardinalia of the preced- 

 ing specimen enlarged X 6, showing alate plates and deposits on the side of the 

 cruralium; (42, 43) respectively ca. X 8 and X 4 views of the cardinalia showing 

 the cruralium, septum, and alate plates, paratype, H7i66f ; (44) another brachial 

 interior showing alate plates, X 3, paratype, H7i66i. 

 Horizon and locality same as A above. 



E. Camerella Pennsylvania Cooper, new species 575 



(45-49) Respectively posterior, anterior, side, brachial, and pedicle views of a com- 

 plete specimen, X I, holotype, 117142. 



Row Park formation, field east of the railroad cut, north side of the Cumber- 

 land Valley RR., 2 miles southwest of Marion, Chambersburg (15') Quad- 

 rangle, Pa. 



F. Camerella various Billings 583 



(SO-54) Respectively anterior, posterior, side, brachial, and pedicle views of a 

 complete specimen, X i> hypotype, Y.P.M. 15284. 



Mingan formation, Eskimo Island, Mingan Group, St. Lawrence River, 

 Canada. 



Plate 119 



Brevicamera, Parallelelasma, Parastrophina, Perimecocoelia, 

 Protozyga, Stenocamara 



A. Parastrophina bilobata Cooper, new species 605 



(1-5) Respectively pedicle, posterior, side, anterior, and brachial views, X 3, of 

 the holotype, 117166b. 



Pratt Ferry formation (about 3 feet above the base), 0.2 mile southeast of 

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



B. Perimecocoelia semicostata Cooper, new species 594 



(6) Interior of the pedicle valve showing the spondylium, X 2, paratype, 117159^ 



