Obornella lakhaparensis   SS Das,  2006 (Sea Snail)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Mollusca
Class: Gastropoda
Order:
Family:Pleurotomariidae

Description
Size: Maximum height 13 mm, maximum diameter 21 mm.

Shell sub-lenticular, broadly phaneromphalous. Apical angle ranges between 107° and 114°. Whorls are five in number, protoconch is not well preserved, whorls are separated by weakly impressed suture. Spire low, obtusely conical to weakly coleoconoid and about one-third of the shell height. Inclined upper whorl face broad, flattened in early whorls, but becomes feebly concave during late ontogeny. Angular periphery gradually becomes sub-angular during ontogeny. Selenizone moderately wide (maximum width 1.5 mm), smooth, raised and angular in early ontogeny, and convex, cord-like in last whorl; it is situated at lower-third of whorl. Labral slit relatively long, being one-twelfth of the last whorl. Area between slit band and periphery is very narrow and concave in early whorls, but becomes flattened and distinctly steeper sided with increasing age. Above selenizone, surface ornamented with closely spaced collabral cords cancellated by relatively weaker spiral threads which are less conspicuous or absent in area between selenizone and periphery. Periphery weakly crenate. Base weakly curved to flat with gradual umbilical margin and ornamented dominantly by spiral threads intersected by weaker axial elements. Umbilical diameter is about one-fifth of shell diameter. Aperture lenticular, with labral side more pointed than the columellar side.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Gujarat, Gulf of Kachchh INDIA

Literature Source(s)
  • Das, SS (2006) Record of a new species of Obornella Cox 1959 (Gastropoda) from the Tithonian of Kutch, western India Journal of Asian Earth Sciences Elsevier 30(2) 207-212 Available at - http://dx.doi.org/10.1016/j.jseaes.2006.07.016
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org

Page last updated on:2010-07-19

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