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


 

Conus submonilifer

(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