LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

132 lower chetaceous deposits ijf california and oregon
aa indicated fay Gabb. The species bag since been found abundantly in widely
separated! zones on the Cottonwood Creek, Shasta County, as follows:
a. Loe, 1353 (Calif. Acad, Sci.) in the lower beds ol the Horsetown group, near
Ono.
b. Loo. 1659 (Calif, Acad. Sci.) in the upper beds of the Horsetown group, Hulen
Creekc.
Loc. 1292 (Calif. Acad. Sci.) in the basal beds of tho Chico aeries, Cottonwood
Creek.
The atrati graphic range of the species ia therefore throughout the Horsetown
group, extending into the lower beds of the Chico aeries,
TURRITELUOAB Gray
Glaucoma Giebel
Glautonia ketptria Andersen, n. ep.
(PKU T. FIFUTM B,»)
Shell small, spire tapering rapidly; whorls about oight or nine, each bordered
above by a distinct spiral ridge situated beneath the suture; sides of whorl slightly
concave; surface marked by traces of transverse, vertical ribs and by fine revolving
lines, best seen in the mold; final whorl bordered by spiral ridges at top and bottom;
base terminating abruptly, bearing a short canal, apparently not marked by spiral
lines.
The holotype (Calif. Acad. Sci. type Coll.) was found at Locality 152 (Calif.
Acad, Sci.) in the Ferrin zone of the Hulen beds, associated with Phyllocerav fft«rc*