LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

276 loweb. chetaceous deposits in california and oregon
PLATB 31.—CJVETACEOU3 FOSSILS FROM CAMFORXIA AXD OREGON
(L) Thurmannia jupiUr nov. Holotype. Greatest diameter, 230 mm.; thickness
of whorl, 65 mm. Hamlin—Broad zone, upper part of Paakenta Group; 3 miles
southwest of Ono, Shasta County, p. 162.
(2-5) Lyiicoctras jiackardi nov, (2) Holotype. Greatest diameter, 66 mm.;
thickness of whorl, 15 mm. (3) Side view of paratype. (•!) Peripheral view of
same fragment. Middle part of Paskenta Group; Loc. 26S (O. S. C.), a mile southeast
of Riddle, Oregon, p. 164. (5) Plesiotype, enlarged; greatest diameter, 31
mm.; width of umbilicus, 5 mm.; Loc. 268 (O. S. C.), as above.