Conus durhami
(Hanna, G.D. & A.M. Strong, 1949)
Shell broad, spire low with straight sides, suture lightly impressed with a
non-striated groove; whorls about eight; shoulder rounded; color markings consisting
of a network of brown lines enclosing roughly angular areas of light cream.
Length 39.5 mm., diameter 25.5 mm.
HOLOTYPE, No. 34200 (Univ. Calif. Mus. Paleo.), from
Loc. A 1269 (U.C.) "south side of Carrizo Mountain, Imperial County,
California; Pliocene; in small canyon about 3/8 mile east of mouth of Alverson
Canyon in small draws cut in basal conglomerate in west side of canyon, 100-200
yards from its mouth." (Bramkamp.)
The species is named for Dr. J. W. Durham,
paleontologist of the University of California, who made a large collection of
fossils in the region in 1934. The specimen is not remarkable solely for the
preservation of the color markings but indicates a relationship with the
textile group of cones. This shows that such forms as Conus dalli need
not be recent migrants from other seas because in this case as well as others,
the group has been here for a comparatively long time. A similar case is
presented in connection with Conus tessulatus and bramkampi.
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Conus
durhami
Holotype 34220 Plate 10 fig. 1 mm. 39,5 x 25,5 Pliocene Carrizo
Mt. |
Bibliografia Consultata
·
(1)
Occasional papers of the California Academy of Sciences – n.35 - 1963