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Species / Varicospira Narica

Varicospira Narica

Stromboidea


Original Description of Rimella subrimosa d'Orbigny var. narica by Vredenburg, 1925:

  • " In this Nari fossil, the spire-whorls have a tendency to be taller than in the Gáj form, the entire spire being proportionately a little taller than in the type: even in such exceptional specimens that have unusually short spire-whorls, the proportionate difference is still maintained: thus if the body-whorl of a Nari specimen has the same proportions as are usual in the Gáj specimens, the spire is proportionately longer; in those rare instances when the spire of the Nari form resembles that of the Gáj specimens, the body-whorl is shorter. The Oligocene specimens are apt to be slightly longer than those from the Gáj. The presence of the stromboid sinus has been observed in the oligocene form, though none of the specimens are sufficiently complete for the existence of the subsidiary notch to be ascertained. In every other character the Nari form agrees exactly with the Gáj form. In addition to specimens with the ribs slightly wider-spaced, as observed in the Gáj form, the Nari form also includes one specimen with the ribs much more crowded. It probably represents a local race."
  • Locus typicus: Nari of the Quetta-Pishin region, Pakistan
  • Stratum typicum: Oligocene

References

  • Kantimati G. Kulkarni, Satarupa Bhattacharjee Kapoor and Vidyadhar D. Borkar, 2010. Molluscan fauna from the Miocene sediments of Kachchh, Gujarat, India – Part 3. Gastropods; J. Earth Syst. Sci. 119, No. 3, June 2010, pp. 307–341
  • Vredenburg, 1925
  • Vredenburg E W 1928 Description of Mollusca from the Post-Eocene Tertiary Formation of North Western India: Gastropoda (In Part) and Lamellibranchiata. Geol. Surv. India Memoirs 50 351–506.

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