Conus
mutilatus (Tuomey, 1853)
Descrizione e caratteristiche (1):
Spire depressed; whorls flattened; side longitudinally
convex. Spiral angle, 101°; height, 2,5 inches; breadth, 1.5 inches. Casts of
shell are abundant it Wilmington, N. C., and in the white limestone of Alabama.
It it also found in the Eocene beds on the Santee. They are easily
distinguished from the other Eocene species. In C. gyratus Morton the
spire is more produced; whilst in C. sauridens Conrad it is more
depressed. Casts of the latter have the spiral whorls isnearly the same plane.
Numerous specimens of various size from the type
locality are in the United
States National Museum. The casts hare about five whorls; spire elevated
with flattened apex; top of whorls depressed parallel to the sides of apical
angle; sutures of cast deeply channeled; aperture narrow, curving slightly to
the left at base. Height, 23 millimeters; maximum diameter, 14 millimeters.
Conus mutilatus has a higher spire than C. sauridens Conrad, and shows no signs
of a fold or the columella. C. mutilatus is similar to casts of Conus
collected by Heilprin from the Eocene of South Carolina, which are in the
United States National Museum labeled C. gyratus ? Morton but are
obviously not that species. C. mutilatus differs from the South Carolina
form in its higher spire and less deeply channeled sutures.
Localities: Wilmington, New Hanover County; old Rocky
Point, Fender County, North Carolina.
Geologic horizon:
Castle Hayne marl, of Jackson Eocene age.
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Conus mutilatus |
Bibliografia Consultata
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(1) - Tuomey, M., 1852. Descriptions of
some Fossil Shells from the Tertiary of the Southern States. Proceedings
of the Academy of Natural Sciences of Philadelphia, 6
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