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LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

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explanation op plates 281'<br />

PLATE 66,—CNETAEIONA FOSSILS FBOM <strong>CALIFORNIA</strong><br />

(I) Ancyloceraa eltphas nov. Holotype. Dorsal view, showing aperture (dark<br />

area above the shaft). Note crushing of abaft below body-chamber during life of<br />

the animal, (See PI. 64.) p. 209.<br />

(2, 2a) Hemibaculites nauplius nov. Holotype. (2) Side view, showing suture<br />

line, in part. Length 100 mm.; greatest width, 30 mm. (2a) Section of holotype,<br />

near middle. Mitchell tone, lower part of Hometown Group; Loc. 1347 (C. A. S.),<br />

near Mitchell Creek, Shasta County, p. 221.<br />

(3, 3a) Hcmibaculilts cyclopius nov. Holotype. (3) Length of holotype, 15.3<br />

inchoB (386,6 mm,); greatest diameter, 76 mm. Above the Argonaut zone, upper<br />

part of Horsetown Group; Loc. 1346 (C, A. S.), Alderson Creek, 2 miles south of Ono,<br />

Shasta County. (3a) Section of same. p. 221.

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