LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

136 lower chetaceous deposits ijf california and oregon
Stewart gives tbe following dimensions for the lectotypei height, 11 nun.; width,
0 mm. As far as information goes at present this species has been found only in the
Horeotown group in Shasta County. Stanton records it from the lower Horaetown
beds near Ono, perhaps in the Ono zone.
Act eon politic (Gabb)
Ringinella polita GABB, Paleont. Calif., vol. 2, 1869, p. 174, pi. 28, fig. 60; "Shasta
Group," Colusa County—STANTON, V. S. Geol. Surv., Bull. 133, 1995, p. 19;
age later than the Paasenta group suggested—ASTDEESOW, Calif, Acad, Sci.,
Pr., 3d vol. 2,1902, p. 41* species included in Horsetown groups
AcUton poJiiu* (Gabb) STEWART, Phila. Acad. Nat. Sci., Pr,, vol, 78, 1923, p. 431,
pi. 24, figs. 18, 19; supposed holotype.
Gabb's record as to the locality at which the holotype was obtained ie the only
known record. He states (Gabb, 1889a, p. 175), that this species was found with
Liocttim punctatitm "south of the road from Colusa to the Hot Sulphur Springs, in
the first range of foothills, Colusa County," If this statement ia taken literally
the species and its associates can hardly be older than the middlo port of the Chico
series. Similar forms have been found in the Chico beds of the Rogue River Valley,
in southern Oregon.
Acteonina calafia Stewart
?Acieomna pvvoidet GABB, Paleont. Calif., vol. 1, 1884, p. 113, pi. 19, fig. 57; North
fork of Cottonwood Creek, Shasta County; vol. 2, 18C9, p, 173, pit. 28, fig. 67,
"Shasta Group," Cottonwood Creek.
Acteonina calafia STEWART, Phila. Acad, Nat. Sci., vol. 78,1928, p. 432, pi. 21, fig, 12.
Stewart states that Gabb's holotype in the Museum of Paleontology is a fragment,
and the "name a homonym," and proposes aa the holotype of his own species the
specimen described and figured by Gabb (1889a, p. 173, pi. 28, fig. 57). Gabb states
that the horizon of this species is within the "Shasta Group/' but its occurrence in
this group rests only upon his record.
Acie&ndla etriformit Gabb
AcleoneUa (miformit GABB, Paleont. Calif., vol. 2, 1889, p. 173, 232, pi. 28, fig, 50;
"Chico Group," Cottonwood Creek, Shasta County—STEWAUT, Phila. Acad.
Nat, SOL, Pr., vol. 78,1620, p, 432; locality and honron as given by Gabb.
This species is abundant in the Chico series at many localities in California and
in southern Oregon, and has usually been regarded as belonging exelumvGiy to this
series, its usual horizon being in the Turanian or Cenomanian portion. A single
example of the species has recently been obtained from the lower beds of tho Horsetown
group at Locality 1353 (Calif. Acad. Sci.) near the bridge on the North fork of
Cottonwood Creek, at Ono, Its range, therefore, is throughout the Horsetown group
and the lower part of the Chico scries.
Paladmtlt Gardner 1915
Paladmete perforata (Gabb)
tfepiuneo perforata CUBB, Paleont. Calif., vol. 1, 1304, p. 89, pi. 18, fig. 39; North
fork of Cottonwood Creek, Shasta County.
.EripacAjfo perforata GABB, Paleont. Calif., vol, 2, 1859, p. 49; "Shasta Group,"
Cottonwood Creek.
Paladmeie -perforata (Gabb), STEWART, Phila. Acad. Nat, Sci., Pr., vol. 78, 1926, p.
424, pi. 22, fig. 8; lectotype, from the collection of the "University of California,
figured.