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Species / Ectinochilus Levis

Ectinochilus Levis

Stromboidea


Original description of Rimella levis by Cox, 1930:

  • "Shell of medium size, fairly stout for the genus. Spire conical, sometimes with slightly convex sides; spire angle about 27. Apex unknown. Whorls probably numbering about ten, very slightly convex, separated by linear sutures; height of early whorls about half their diameter, penultimate whorl relatively much higher. Last whorl occupying well over half the total height of the shell, gradually attenuated and scarcely excavated below the obtuse periphery, which lies at about the prolongation of the final suture. Whorls of spire quite smooth except for a few strong varices occurring at irregular and usually distant intervals. Growth-stages becoming very accentuated on the last whorl just before the aperture, forming a series of distinct, narrow riblets, which meet the suture normally, but sweep forward in a gentle curve some distance below; at the same time a slight ridge, fimbriated by the growth-riblets, is developed parallel to, and just below, the suture. Base sculptured with closely spaced, delicate, punctate spiral striae. Aperture narrow, oblique. Posterior canal very narrow, adhering to the spire, and reaching to the apex, sometimes curving slightly to the left on the higher whorls. Columellar lip smoothed by a fairly wide, but not very thick, callosity, the margin of which is distinct, although it is not detached from the base. Outer lip expanded and reflected, moderately thick at its margin; anterior rostrum unknown."

Locus typicus: Samana Range, Hangu District, Khyber Pakhtunkhwa Province (formerly known as North-West Frontier Province, India), Pakistan

Stratum typicum: Hangu Shales, marginal marine shale in the Hangu Formation of Pakistan, Selandian/Thanetian, Paleocene (Cox, 1930)

Rimella levis (Cox, 1930); Hangu Shales, Eocene; Samana Range, Hangu District, Khyber Pakhtunkhwa Province (formerly known as North-West Frontier Province, India), Pakistan; Coll. BM(NH) no. G.49490-1; Copyright BM(NH)

References

  • L. R. Cox. 1930. The fossil fauna of the Samana Range and some neighbouring areas: Part VIII. The Mollusca of the Hangu Shales. Memoirs of the Geological Survey of India, Palaeontol. Ind. N.S. 15, 129-222.

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