Asperdaphne esperanza

Asperdaphne esperanza is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.[1]

Asperdaphne esperanza
Original image of a shell of Asperdaphne esperanza
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Raphitomidae
Genus: Asperdaphne
Species:
A. esperanza
Binomial name
Asperdaphne esperanza
(May, 1911)
Synonyms[1]

Hemipleurotoma esperanza May, 1911

Description

The length of the shell attains 5.3 mm, its diameter 2 mm.

(Original description) The dull white shell is high, attenuate anteriorly. It contains six whorls, strongly angular, and including a smooth blunt two-whorled protoconch. A strong keel angles the periphery, another less strong halfway to the lower suture, and a third margins the suture. On the upper slope are two or more faint spirals. Numerous axial lirae cancellate the shell and pass over the keels, rendering them nodulous. They disappear on the lower part of the body whorl, which is occupied by about eight smooth spirals. The aperture is subquadrate, contracted in front to form a short open siphonal canal. The outer lip is strongly angled at the carena, forming a wide, triangular sinus; below corrugated by the sculpture. The inner lip is curved. [2]

Distribution

This marine species is endemic to Australia and occurs off Tasmania.

gollark: You know, it would be really funny if I edited Planck's constant and thus kilograms.
gollark: They just defined Planck's constant as a fixed value, and the only other units used in it are metres and seconds, which have a definition.
gollark: kg.
gollark: I don't know what the thing is, but that's your problem.
gollark: So if you just divide Planck's constant by something in m^2 s^-1, you get kilograms out!

References
  1. Asperdaphne esperanza (May, 1911). Retrieved through: World Register of Marine Species on 5 April 2010.
  2. May W.L. (1911). New marine Mollusca. Papers and Proceedings of the Royal Society of Tasmania. (1910): 380–398, pls 13–15 This article incorporates text from this source, which is in the public domain.
  • May, W.L. 1923. An illustrated index of Tasmanian shells: with 47 plates and 1052 species. Hobart : Government Printer 100 pp.
  • Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213-359, pls 42-56 This article incorporates text from this source, which is in the public domain.
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
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