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LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

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389 loweb. chetaceous deposits in california and oregon<br />

PLATE 69.—<strong>CRETACEOUS</strong> FOSSIL FROM <strong>CALIFORNIA</strong><br />

Ancyloceras atlrox nov, Holotypc. (1) Left aide view, much rcduced. (2) Obliques<br />

ventral view of hoiotype, showing strong, tritubcrcuiate ribs on the body<br />

chamber. Length of hclotype along aiphooal line, £30 mm.; greatest width of body<br />

cka ruber, 88 mm.; greatest diameter tit top of shaft, 70 mm. (3) Section of body<br />

chamber below bend. (3a) Section of abaft at and of figured fragment. Mitchell<br />

zone, lower port of Horsetown.Group; a mile north of Loe. 1147 (Cl A. S.), east af<br />

Mitchell Creek, Shasta County, p. 209.

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