Conus vaderensis (Weaver & Palmer, 1922)
Descrizione e caratteristiche (1):
Shell of
medium size, biconical; whorls four to five with three to four smooth, apical
whorls which are very pointed; suture appressed; area between the suture and the
shoulder of the whorls concave and sculptured with fine, curved striae;
shoulder decorated with 16 or 18 nodes; body whorl covered wioth revolving
microscopically, raised ribs crossed by longitudinal lines. The spiral ribs or lines are better developed
on the posterior region of the whorl; aperture long and narrow with parallel
sides (1).
This
shell is close to C. remondii Gabb. Gabb states the the sides of the
whorls are straight and regularly conical. His illustration bears out this
characteristic. The sides of the whorls of C. vaderensis are concave.
The general appearance of this species is somewhat similar to C.
cowlitzensis Weaver, but the spire of both young and mature individuals of C.
vaderensis is only about one-half that of C cowlitzsensis. The
former possesses also a characteristically greater diameter (1).
Dimensions (1): altitude of the shell 29 mm.; width
of body whorl 12 mm.; apical angle 60°.
Occurrence (1): At locality 329 (University of
Washington Palaeontological Collection) at bend of Cowlitz Rover, near Vader,
Lewis County, Section 28, Township 11 North, Range 2 West.
|
|
|
Conus vaderensis (1)
Plate XII - fig. 7, 8 Eocene |
Conus
vaderensis
Holotype 7539 Eocene |
|
|
|
|
Conus vaderensis |
|
Bibliografia Consultata
·
(1) - Weaver, C. E., and Palmer, K. V. W.,
1922. Fauna from the Eocene of Washington. University Of Washington
Publications In Geology, 1(3): 1 -45
·