LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

EXPLANATION OF SPATES 255
PLATE 10.—CwErTACEona Foaaiis FROM CALIFORNIA
(1) .Yatrltlut Qabtri Anderson, A large example found in tho Perrin zone on the
east branch of Hulen Creek, Shaata County. Figure reduced; greatest diameter,
150 mm.; thickness of whorl, 70 mm. Loc. 1668 (C. A. S.). p. 138.
(2) Nautilus averilli nov. Holotype. Greatest diameter, 72 mm.; thickness of
whorl, 48 nun. Barr zone, middle part of Horsetown group; Loo. 1347 (C. A. S.),
Mitchell Creek, Shaata County, p. 130.
(3, 4) Aucella soli da Labuaon. Reproduction of figures by Pavlow (1907, pi. 3,
figs, 25, 26), Shelton's ranch, Tehama County. "Zone Mi", Paskenta group,
McCarthy Creek section, p. 105.
(5) Turbo festivus nov. Holotype. Height of spire, 25 mm,; width at base,
17 nun. Ono zone, Loo. 1353 (C. A. S.), near Ono, Cottonwood Creek, Shasta
County, lower beds of Horsetown group, p.129.