LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

281 LOWER CBETACEOtrS DEPOSITS IN CALIFORNIA. AND OREGON
PLATE IS,—CRETACEOUS FOSSILS FROM CALIYOASIA
(1, 2) Lytacerat tratki nov. (1) Holotype- Greatest diameter, 125 mm,; thickness
of whorl, 43 mm. lower part of Horsetown group; Loo. 1347 (C. A. S.), Argonaut
zone, GELat of Mitchell Crack, 5 miles south of Ono, Shasta County. (2) Lytocenw
traski nov. Paratope. Greatest diameter, 78 mm,; same locality and horizon;
middle part of Hometown group, as above* p. H6,
(3, 4) Lytoceraa {(JoMflwwaa) anguiatum Anderson. Plesiotype. (3) Mature
example; greatest diameter, 05 mm. Argonaut lone, middle o( Horaetown group;
Loc. 1347 (G. A. S.), 5 milee south of Ono. (-1) Young example; diameter 28 mm.;
same locality; Shasta County, p. ISO.
(6) Lytncerai (Gabbioceras) vinlum'tmi nov. Holotypc. Greatest diameter,
57 mm.; thioknesa of whorl, 24 aim. Argonaut rone, middle part of HeraEtown,
group; toe. H47 (C. A. S.>, east of Mitchell Creek, £ miles south of Onof Shasta
County, p. 1E0.