Trochus stellatus

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Trochus stellatus
Trochus incrassatus 001.jpg
Drawing showing three views of a shell of Trochus stellatus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Trochus
Species:
T. stellatus
Binomial name
Trochus stellatus
Gmelin, 1791
Synonyms
  • Polydonta stellataChemnitz
  • Pyramidea tubiferusChenu, 1859
  • Trochus incrassatusLamarck, 1822
  • Trochus stellarisRöding, 1798

Trochus stellatus, common name the stellate trochus, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. [1] The species is now extinct. [2]

Contents

Trochus incrassatus Lamarck, 1822 is considered a synonym of this species by the Australian Faunal Directory [1]

Description

The size of this large, heavy, top-shaped shell varies between 18 mm and 40 mm. The shell has wrinkled plaits and concatenated dots. The sutures of the upper whorls are spinous and radiated. [3] The shell has a yellow tint to it and has brown stripes. [4] The inside of the shell is a glossy white.

(Description as Trochus incrassatus) The height of the shell attains 30 mm, its diameter also 30 mm. The, thick, heavy, solid shell has a conical shape. It is, whitish, radiately striped above and below with purplish red. The outlines of the spire are convex. The 7 to 8 whorls are coarsely granulose in about 5 or 6 spiral series, of which the upper series is most prominent. The periphery is rounded. The base of the shell is a little concave, with about 7 concentric granulose or subgranulose lirae. The aperture is strongly lirate within upon the parietal and outer wall. The basal margin contains four or five teeth. The columella is dentate. The umbilical tract is nearly smooth or obsoletely spirally plicate. [5]

Distribution

This marine species occurs off India, Sri Lanka, the Philippines, Japan, Oceania, New Caledonia, and Australia (the Northern Territory, Queensland and Western Australia); also in the Indian Ocean off Madagascar.

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References

The upper part of the Trochus stellatus. Trochus stellatus (150558183).jpg
The upper part of the Trochus stellatus.
  1. 1 2 Australian Faunal Directory: Trochus stellatus Archived 2014-07-14 at the Wayback Machine
  2. ↑ "Trochus - Encyclopedia of Life". eol.org. Retrieved 2022-04-08.
  3. ↑ Lewis Weston Dillwyn, A descriptive catalogue of recent shells, Volume 2
  4. ↑ "Trochus stellatus". www.marinespecies.org. Retrieved 2022-04-07.
  5. ↑ H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
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