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LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

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PLATE 20.—CUBTACEOCS FOSSILS FROM <strong>CALIFORNIA</strong><br />

(1,2) Lytoeerae (Kotsmaitllo) aurorium nov. (1) Holotype. Greatest diameter,<br />

83 mm.; greatest thickness, 30 mm. (2) Young adult shell of Bame. Neptune zone,<br />

upper part of Horsetown group; Loc, 1659 (C, A, S,), east branch of Hulen Creek,<br />

Shaata County, p. 151,<br />

(1-5) Lylectrat (Kassmaiella) gainem nov. (3) Holotype. Greatest diameter,<br />

58 mm,; greatest thickness, 22 mm. (4) Paratype, Young adult example; greatest<br />

diameter, 42 mm, (5) Young Example; diameter, 30 mm. Neptune zone, upper<br />

part of Horsetown group; Loc, 16&9 (C. A. S.), east branch of Hulen Creek, Shasta<br />

County, p, 163.<br />

(fl, 7) Sonnwolio rogemi Hall and Ambroae. Examples from Perrin zone, upper<br />

part of Horsetown group; Loc. 162 (C. A. S-), east branch of Hulen Creak, Shasta<br />

County. (6) Young example; greatest diameter, 34 mm.; thickness of whorl, 1 i mm.<br />

(7) Mature example; greatest diameter, 41 mm.; thickness of whorl, 14 mm, p. 197.<br />

(•&) CUoniccras cf, leeontei (Anderson), Greatest diameter, 3S mm.; thickness of<br />

whorl, IS mm- Perrin zone, upper part ot Horsetown group; Loe. 162 (C. A, S.),<br />

east branch of Hulen Creek, Shasta County, p. 192,<br />

(9, 10) Si7er£f« pwiosia/ormt's nov. (9) Holotype; mature example; greatest<br />

diameter, 22 mm.; thieknesa of whorl, 5.5 mm. Buenavantura zone, upper part of<br />

Horsetown group; Loc. 1346-A (C, A, S,)f west branch of Hulen Creek, Shaata<br />

County. (10) Same example enlarged, p, 101.

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