Trochus squarrosus

Trochus squarrosus
Drawing showing two views of a shell of Trochus squarrosus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Trochus
Species:
T. squarrosus
Binomial name
Trochus squarrosus
Lamarck, 1822
Synonyms

Trochus oblitus Reeve

Trochus squarrosus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[1]

Description

The height of an adult shell attains 35 mm, its diameter 40 mm. The thick, umbilicate shell has a conic-pyramidal shape. It is radiate with white and rose color. it contains 9 whorls, the embryonic smooth, the following planulate. The shell is sculptured with spiral series of regular beads the remaining whorls subexcavated in the middle, with three series of granules on the upper part and a series of oblique short folds below. The body whorl is carinated, with 16 to 24 folds crenulating its periphery. The base of the shell is planulate, with six concentric granulose lirae, separated by interstices as wide as the ridges. The aperture rhomboidal and lirate within. The umbilical area spirally plicate.[2]

Distribution

This species occurs in the Indian Ocean off Madagascar.

References

  1. ^ Trochus squarrosus Lamarck, 1822. Retrieved through: World Register of Marine Species on 1 May 2010.
  2. ^ H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
  • Dautzenberg, Ph. (1929). Contribution à l'étude de la faune de Madagascar: Mollusca marina testacea. Faune des colonies françaises, III(fasc. 4). Société d'Editions géographiques, maritimes et coloniales: Paris. 321–636, plates IV-VII pp
  • "Trochus squarrosus". Gastropods.com. Retrieved 16 January 2019.

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