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LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

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explanation op plates 281'<br />

PLATE 82.—<strong>CRETACEOUS</strong> FOSSILS VROU <strong>CALIFORNIA</strong><br />

(1, la, lb) AeroieufKa impreata (Gabb). (1) Holotype. Total length, 172 mm.;<br />

normal diameter, 27 mm. Museum of Paleontology, University of California collection.<br />

Probably lower Horsotown Group; Cottonwood Creek, Shasta County,<br />

(la, lb) Sections of faolotypo at A and B. p. 225,<br />

(2, 2a) Aeroteufftii barrana nov. Holotype, with reflected end view. Barr zone,<br />

lower part of Horsetown Group; Loo. 1347 (C. A. S.), near Mitchell Creek, Shasta<br />

County, p. 223.<br />

(3) Perw'n^uierta huhnana nov. Holotype. Greatest diameter (cat.), 323 mm.;<br />

thickneis of whorl, GO mm. Probably above the Neptune zone, upper part of Horse'<br />

town Group; found on Cottonwood Creek, Shasta County. Oregon State College<br />

collection, p. 19S.

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