Pleurotomella clathurellaeformis

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

Pleurotomella clathurellaeformis
Drawing of a shell of Pleurotomella clathurellaeformis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Raphitomidae
Genus: Pleurotomella
Species:
P. clathurellaeformis
Binomial name
Pleurotomella clathurellaeformis
Schepman, 1913

Description

The length of the shell attains 8¼ mm, its diameter 3 mm.

(Original description) The white shell is elongately-fusiform, thin and transparent. It contains about 9 whorls, of which about 3 form a reddish-brown protoconch, composed of convex whorls, with riblets in different directions, but the protoconch being rather worn, the sculpture is not prominent. The subsequent whorls are convex, with a narrow, excavated part below the deep suture. The excavation is crossed by numerous, slightly curved, axial riblets. The convex part of whorls is sculptured by strong, rounded, oblique, axial ribs, 11 in number on the body whorl, crossed by strong spirals, 6 in number on penultimate whorl, of which 4 are stronger and are especially prominent on the crest of axial ribs. These ribs disappear on the base of the body whorl, which, as well as the rather short siphonal canal is lirate. The aperture is oval, angular above, ending below in a rather narrow, slightly curved, compressed siphonal canal. The peristome is thin, with a narrow, shallow sinus above. The columellar margin is concave, with a thin layer of enamel, directed to the left near the siphonal canal. [2]

Distribution

This species occurs in the Ceram Sea, Indonesia.

gollark: Oh, and the strings are terrible.
gollark: Also, channels are not a particularly good primitive for synchronization.
gollark: Also, the implicit interfaces are terrible.
gollark: - lacking in generics - you have to use `interface{}`- public/private visibility is controlled by *capitalization* of all things- weird bodgey specialcasing instead of good generalizable solutions- you literally cannot express a `max` function which returns the largest of two of any type of number in a well-typed way
gollark: Go's syntax is kind of nicer but its awful type system (yes, worse than an untyped language's) is... not good.

References
  1. Pleurotomella clathurellaeformis Schepman, 1913. Retrieved through: World Register of Marine Species on 5 April 2010.
  2. Schepman, 1913. The prosobranchia of the Siboga expedition. Part IV -V - VI: Toxoglossa 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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.