Cirsonella densilirata

Cirsonella densilirata is a minute sea snail, a marine gastropod mollusc in the family Skeneidae.[1]

Cirsonella densilirata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Skeneidae
Genus: Cirsonella
Species:
C. densilirata
Binomial name
Cirsonella densilirata
Suter, 1908

Description

(Original description by Henry Suter) The height of the shell attains 1.8 mm, its diameter 2.3 mm. The small, white shell has a turbinate shape. It is subdiaphanous, slightly shining, and perforated. Its sculpture consists of numerous fine microscopic spiral lirae. The spire is depressed conoidal. Its outlines are convex, lower than the aperture. The yellowish-white protoconch consists of 2 convex smooth whorls. The 3½ convex whorls are rapidly increasing. The periphery of the body whorl is rounded. The base of the shell is convex, with an impressed umbilical area. The suture is not much impressed. The circular aperture is oblique. Inside it is microscopically lirate. The peristome is continuous and thick. The arcuate columella is slightly expanded toward the narrow perforation, sometimes partly concealing it. The horny operculum is multispiral with a central nucleus.[2]

Distribution

This marine species is endemic to New Zealand and was found off South Island.

gollark: How does quantum stuff come into this?
gollark: Also, it appears so far as if personality stuff is an... emergent property, I think is the right term... of the lower-level neuron interactions, rather than emerging from quantum effects in one of the neurons or something.
gollark: Not at that stage of the process, no, just when gametes are being made.
gollark: If I'm remembering correctly, when a zygote is made you just get the 23 chromosomes in each gamete merging together into one thing of 46.
gollark: No it's not.

References
  1. Rosenberg, G. (2013). Cirsonella densilirata Suter, 1908. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=598290 on 2013-10-03
  2. Suter H. (1913-1915), Manual of new Zealand Mollusca; Wellington, N. Z. :J. Mackay, govt. printer,1913-1915
  • Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.