Prosipho spiralis

Prosipho spiralis
Shell of Prosipho spiralis (specimen at the Smithsonian Institution)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Prosiphonidae
Genus: Prosipho
Species:
P. spiralis
Binomial name
Prosipho spiralis
Thiele, 1912

Prosipho spiralis is a species of sea snail, a marine gastropod mollusk in the family Prosiphonidae, the true whelks.[1]

Description

(Original description in German) This shell is easily identified by its unique apex, which appears to have been cut off at the top. The specimen is 7.5 mm high and 3.75 mm in diameter, composed of 4.5 whorls.

The first 1.5 embryonic whorls are smooth and have relatively straight sides. The following whorls begin with three spiral ridges, with more being added later. The underside of the body whorl is well-rounded and slightly bulging, also featuring distinct spiral ridges. In total, there are 10 ridges on the body whorl.

The aperture is a large, egg shape that transitions smoothly into the lower, slightly oblique siphonal canal. [2]

Distribution

This species occurs in the Davis Sea and also off Roosevelt Island, Ross Sea, Antarctica.

References

  1. ^ Prosipho spiralis Thiele, 1912. Retrieved through: World Register of Marine Species on 17 April 2010.
  2. ^ Thiele, J. (1912). "Die antarktischen Schnecken und Muscheln. Deutsche Südpolar-Expedition, 1901-1903, im Auftrage des Reichsamtes des Innern. Wissenschaftliche Ergebnisse. 13". Zoologie. 5 (2). Public Domain This article incorporates text from this source, which is in the public domain.
  • Engl, W. (2012). Shells of Antarctica. Hackenheim: Conchbooks. 402 pp.
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