LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

EXPLANATION OF PLATES 347
PLATE 2.—CHETACEQUS FOSSILS FROM CAUFOHNIA
(1) Pinna egutttiliana nov. Holotype. Length (incomplete), 144 mm.; grcateet
width, 70 mm, Perrin zone, upper part of Horsetown group; Lee. 1968 (C, A, S,),
east branch of Hulen Creek, Shasta County, p. OS,
(2) Pinna ponlica nov. Holotype. Length(baompletc),08 mm.; greatest width,
35 mm.; lower part of Horsetown group; Loc. 1353 (C. A, SO, Cottonwood Creek,
near Ono, Shasta County, p. 03.
(3, 4) Nemo dan brewmaiw (Gabb). Topotype, North fork of Cottonwood
Creek. (3) Left valve; length, 33 mm.; height, 21 mm, (4) Inner view of specimen,
showing hinge plate; basal bede of Chico series; Loc. 1340 (C. A. &.), Cottonwood
Creek, Shasta County, p. 96.
(5) Modioltw (VoJaeMo) onaenxit nov. Holotype, right valve; length, 47 mm.;
height, 17 mm. Lowest bed of Horsetown group; Locality, North fork of Cotton*
wood Creek, near Ono, Shasta County, p. 114.
(6) Modiolus (Faine/fo) henryi nov. Holotype. Length, 29 mm.; height, 13 mm.
Lower part of Paskenta group; north herder of Berkeley, Berkeley Hills, Contra
Costa County, p. 114.
(7) Periplomya trinitensis nov. Holotype. Length, 62 mm.; height, 27 mm,;
Upper part of Paskenta group; Clements Ranch, Trinity County, California, p, 118.