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Species / Xenophora Leprosa


Original description of Trochus leprosus by Morton, 1834, p. 46:

  • Trochus 1. T. leprosus, (S.G.M.) pl. xv. fig. 6. Specific character. Compressed; spire composed of about four volutions, presenting an unequal, rugged surface. Diameter, from an inch to an inch and a half.

Locus typicus: "From Prairie Bluff, Alabama. T.A. Conrad."

Comment Morton:

  • This species has considerable resemblance to T. agglutinans, a recent shell of the West Indies.. 2. I have observed some casts of this genus in the calcareous strata of New Jersey.

Trochus leprosus Morton, 1834, pl. 15, fig. 6

History and Synonymy


Description of Xenophora leprosa by Weller, 1907:

  • "Shell small or below a medium size, trochiform, or broad conical; the spire having an apical angle of less than 90 ; base flat or concave, usually more or less depressed in the center, with the margin of the volution more or less rounded, and in old individuals sometimes distinctly rounded; casts showing a small umbilical perforation, but the axis probably solid in the shell; volutions probably seven or eight, but in the casts the upper ones are usually absent and seldom show more than four or four and a half; one small specimen retaining the upper whorls, to the number of four and a half, measures only five-eighths of an inch in diameter. This one, if continued below to the size of the larger one figured, would possess at least eight volutions; whorls obliquely flattened on their surfaces in the direction of the spire, with only a small portion of their edges rounded or vertical, and the surface deeply and abundantly scarred by the cicatrices of foreign substances which have been attached to the surface of the shell during life; aperture compressed, transversely ovate or trapezoidal, and the outer margin much prolonged."

Localities: Atlantic Highlands, Crawfords Corner, Crosswicks Creek and near Jacobstown, all New Jersey, USA

Stratigraphy: Navesink Formation (Navesink marl), Maastrichtian, Upper Cretaceous

Xenophora leprosa in Weller, 1907, pl. LXXVIII, fig. 1, 2, 3


Xenophora leprosa in Sohl, 1960, pl. 10, fig. 19 and fig. 23 - 27. Courtesy of the U.S. Geological Survey


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