Conus
submonilifer (Anderson &
Hanna, 1925)
Shell small, smooth, spire
relatively high, biconical, with nine, heavy, impressed spiral lines on the
lower half of the body whorl and finer ones extending to the periphery; whorls
eight, rising into a high spire with almost straight sides; periphery sharply
angled the ridge being quite smooth, or only faintly crenulated on the body,
but with more distinct crenulations on the younger whorls; shoulder slightly
concave above the angle; lines of growth sinuous on the body whorl, bending
obliquely forward below the angle; apical angle 68°; basal angle 32°.
Altitude of largest shell,
18 mm.; diameter, 13 mm.; spire one-third of the total length; altitude of
type, 9.9 mm.; diameter, 5.2 mm.
Type: No. 812, Mus. Calif.
Acad. Sci.; collected at Loc.244, (C. A. S. Coll.), Live Oak Creek, Kern
County, California,by Bruce G. Martin; Type Tejon Eocene.
This species appears to be
related to the small form called C. remondii (?) herein, found with it
at the type locality of the Tejon Group, but is distinguished from it by the
absence of beads, or even crenulations on the more mature whorls, and fewer
spiral lines on the same. Numerous specimens of both species were obtained at
Live Oak Canyon by Mr. Martin and the writers.
The species is related to C.
hornii but has a higher spire, traces of beads on the periphery, and for
the same number of whorls is uniformly smaller.
Eocene
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(Anderson & Hanna, 1925) HOLOTYPE 812.00 mm. 9,9 x 5,2 Eocene, Tejon Formation Kern County, California |
Conus submonilifer (1) HOLOTYPE 812.00 Plate 8 fig. 6 |
Bibliografia Consultata
·
(1) -
Fauna and Stratigraphic Relations of the Tejon Eocene at the Type Locality in
Kern County, California BY FRANK M. ANDERSON AND G. DALLAS HANNA