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Conus (Leptoconus) smithvillensis (Harris, 1895)
1895. Conus smithvillensis HARRIS, Acad. Nat. Sci. Philadelphia, Proc., p. 55, pl. 4, fig. 2.
1937. Conus (Lithoconus) smithvillensis Harris. PALMER, Bull. Am. Paleontology, vol. 7, no. 32, p. 464, pl. 73, figs. 17, 21.
"General form as figured; whorls about 12; smaller spiral whorls costate or crenulate; penultimate whorl smooth; body whorl smooth, except about 12 revolving lines at base...
"Locality. Smithville, Bastrop Co., Тех.
"Type. Texas State Museum." Harris, 1895.
Conus smithvillensis differs from C. santander in the notably higher spire and more slender and more attenuated body. A peripheral noding is evident on the early whorls, and there is in addition a noding of the 3 or 4 moderately strong lirations on the shoulder. In our collections, none of the examples of C. smithvillensis exceed 40 millimeters in height, and the species occupies consistently a slightly lower horizon in the lower Claiborne than that in which Conus santander is found.
A smallish, high-spired species in the lower Laredo at U.S.G.S. sta. 13596 (H-15) near China, Carlos Cantú, Nuevo León, is commonly represented, but none of the material is well preserved. However, the small size, high spire, and the few remnants of a noded sculpture pattern indicate the Smithville form. Nothing of the sort has been found in the higher horizons.
Distribuzione: Mississippi, Texas, Messico.
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