Pickenia is a monotypic genus of minute sea snails, a marine gastropod mollusk in the family Cingulopsidae.[1] The only known species is Pickenia signyensis, found on Signy Island in the South Orkney Islands.

Pickenia
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Cingulopsidae
Genus: Pickenia
Species:
P. signyensis
Binomial name
Pickenia signyensis
(Ponder, 1983)

Description

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The maximum recorded shell length is 1.48 mm.[2] The shell is a pale orange-brown colour, with a yellow-brown aperture. The protoconch is usually dark purple-brown.[3]

The holotype is held by Amgueddfa Cymru – Museum Wales.[4]

Distribution

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The species has only been found on Signy Island in the South Orkney Islands. The holotype was collected by G. Picken in 1977.[3]

Habitat

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The species' holotypes and paratypes were collected from rocky bottom on algae off the coast of Signy Island.[3] The minimum recorded depth is 4 m.[2] Maximum recorded depth is 10 m.[2]

References

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  1. ^ Pickenia signyensis Ponder, 1983. WoRMS (2009). Pickenia signyensis Ponder, 1983. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=197370 on 5 June 2010 .
  2. ^ a b c Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLOS One 5(1): e8776. doi:10.1371/journal.pone.0008776.
  3. ^ a b c Ponder, Winston F (1983). Rissoaform Gastropods from the Antarctic and Sub-Antarctic: The Eatoniellidae, Rissoidae, Barleeidae, Cingulopsidae, Orbitestellidae, and Rissoellidae (Mollusca, Gastropoda) of Signy Island, South Orkney Islands, with a Review of the Antarctic and Sub-Antarctic (excluding Southern South America and the New Zealand Sub-Antarctic Islands) Species. Vol. 108. British Antarctic Survey. ISBN 0-85665-100-1.
  4. ^ Poppe, Guido T.; Poppe, Philippe. "Pickenia signyensis". Conchology, Inc. Retrieved 22 November 2022.