Spirotropis patagonica

Spirotropis patagonica
Drawing of a shell of Spirotropis patagonica
Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Gastropoda
Clade:Caenogastropoda
Clade:Hypsogastropoda
Clade:Neogastropoda
Superfamily:Conoidea
Family:Drilliidae
Genus:Spirotropis
Species: S. patagonica
Binomial name
Spirotropis patagonica
(d'Orbigny, 1841)
Synonyms[1]
  • Drillia patagonica (d'Orbigny, 1841)
  • Pleurotoma patagonica d'Orbigny, 1841 (basionym)
  • Pleurotoma (Drillia) patagonica (d'Orbigny, 1841)

Spirotropis patagonica is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.[1]

The variety Spirotropis patagonica magellanica (Martens, E.C. von, 1881) was originally described as Drillia patagonica Martens, E.C. von, 1881 with a length half as long [2]

Description

The shell size varies between 6 mm and 15 mm.

The shell is yellowish brown. The first whorls are globose,the third and following ones subangulated, with longitudinal short, fine ribs and close revolving striae. The ribs are obsolete on the body whorl. The sinus is broad and shallow.[3]

Distribution

This species occurs in the demersal zone of the Atlantic Ocean from Southern Brazil to Patagonia

Fossils have been found in Quaternary strata in Brazil.

References

  1. 1 2 Spirotropis patagonica (Orbigny, 1841).  Retrieved through: World Register of Marine Species on 6 November 2011.
  2. ↑ Martens. Sitzb. Bed., 77, 1881
  3. ↑ G.W. Tryon (1884) Manual of Conchology, structural and systematic, with illustrations of the species, vol. VI; Philadelphia, Academy of Natural Sciences

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