LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

explanation op plates 281'
PLATE 68.—CRETACEOUS FOSSILS FIIOU CALIFORNIA
(1) Ancyloterag durrelli nov. Paratvpc, consisting of tbe body chamber of an
example found with the holotype. Position about 200 feet beneath the Mitchell
zone, lower part of the Horsetown Group; Loc. 1661 (C. A. S,), south of Roaring
River, Shasta County, p. 210.
(2) MclcJiioriles indigenes nov, Pleaiotype, Greatest diameter, mm.; thickness
of whorl, 16 mm. Found a little above the Argonaut tone, upper part of the
Horsetown Group; Loc. 134S (C. A. S.), Alderson Creek, 2 miles south of Ono,
Shasta County, p. 184.
(3) Shasticrioeeras hesperum (?), nov. Young coil, showing character of ribbing
in early stages of growth. Mitchell zone, lower part of HoTsetown Group; Loc, 1657
(C. A. S.), near Mitchell Creek, p. 204.
(4) First lateral lobe of Neocraa-pediUa aguila nov, PI. 25,) p. 156.