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Species / Calyptraphorus Popenoe

Calyptraphorus Popenoe

Stromboidea


Original Description of Calyptraphorus popenoe by Gardner, 1935, p. 269:

  • "Shell a little large for the group, and rather stout. Whorls of the spire numerous, trapezoidal, tapering rather rapidly to an acute apex. Protoconch smooth, small, acute, probably coiled 3 times, not very well preserved. Both axial and spiral ornamentation developed upon the spire, the axials little more than puckers along the anterior suture of the later coils of the spire, though on the adolescent coils they traverse the whorl and are feebly arcuate and protractive. Spiral lirae fine and sharp, inclined to be irregular in size and spacing, 15 to 20 to the later whorls of the spire. A sharp incremental sculpture also visible, most distinctly in the interspiral areas. Enveloping callous very heavy, the folds uniting along a seam on the apertural face, frequently leaving bare or thinly veiled an elliptical area directly behind the aperture. Body whorl large, slightly compressed, tapering rather rapidly toward the anterior canal. Anterior canal not preserved."

Stratum typicum: Wills Point Formation, Paleocene

Locus typicus: USGS Sta. 11754, 6 miles South of McFarland sheep pens and 27 miles South East Eagle Pass, Maverick County, Texas, USA

Types: Holotype USNM no. 370938, paratype USNM no. 370939

Calyptraphorus popenoe Gardner, 1935, pl. 24, fig. 4, 6, 7

  • Used by permission of the University of Texas Libraries, The University of Texas at Austin.

Calyptraphorus popenoe Gardner, 1935, pl. 24, fig. 8

  • Used by permission of the University of Texas Libraries, The University of Texas at Austin.

References

  • J. Gardner, 1935. The Midway group of Texas. Texas Univ. Bull. 3301 (]une, 1935), Austin, Tex., The University, 403 pp. 28 pl.

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