LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

EXPLANATION OF PLATES 249
PLATE 4,—CRETACEOUS FOSSILS FROM CALIFORNI A
(1-3) Plica tula onceirats nov. (1) Holotype, upper valve, natural aiz-e. (2) Paratype,
lower valve, natural size, (3) Plesiotype, lower valve, natural size. Upper
part of Paskenta group; Loc. 113 (C. A. S.), Hamlin-Broad sono, Cottonwood
district, Shasta County, p. 111.
(4, 5) Opix gJioataiia nov. (4) Holotype, right valve, natural sire. (5) Plcaiotype,
natural sise, Barr zone, lower part of Horaetcwa group; Loc-1347 (C, A. S.),
Mitchell Creek, Shasta County, p. 121.
(6, 7) 7enus corella nov, Holotype. (0) Front view, enlarged, (7) Right
valve, enlarged. Length 11 mm,j height, 12 mm.; thickness, 11 mm. Perrin zone,
upper part of Horsetown group; Loo, 1346-A (C. A. S.), Hulen Creek, Shasta County,
p, 122.
(8} TtfrtHir collinium nov. Paratype, right valve, slightly enlarged. Upper
part of Paskenta group; Lee. 113 (C. A. S.). p. 122.
(0) Inoetramua ovalua Stanton. Example from west border of Berryessa Valley,
Napa, County. Natural size, Paskeata group, p. 09.
(10-12) Inoceramus cobnicus nov. Plesiotypcs. (10) Right valve (incomplete),
natural she; lower part of Hometown group; Loc. 1353 (C. A. S.)1 near Ono, Shasta
County, (II) Plesiotype, same locality and horizon. (12) Right valve, natural
size; Lower part of Horsetown group; "Zone T", McCarthy Creek, Tehama County,
p. 100,