Trochus firmus
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. firmus
Binomial name
Trochus firmus
Philippi, 1849 [1]
Synonyms[2]
  • Trochus solidus Jonas
  • Trochus (Infundibulops) firmus Philippi, 1849

Trochus firmus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[2]

Description

The size of the adult shell varies between 20 and 26 mm (0.79 and 1.02 in). The notably thick, solid shell has a rather conical shape. It is transversely sulcate. It has a pale green ground, painted with close purple-red streaks above. The base has red-spotted girdles. The whorls are a little subangular above the suture and a little plicate below the sutures, appearing somewhat terraced. The body whorl is rounded-angulate and passes into the base with a blunt angle. The sculpture consists of about seven weak smooth transverse grooves on the upper surface, and about four scarcely elevated concentric girdles on the base. The base of the shell is nearly plane, obsoletely cingulate and false-umbilicate. The funnel-shaped pit occupying the place of the umbilicus has a slightly elevated liration. The aperture is rhomboidal. The entirely simple columella is very oblique.[3]

Distribution

This marine species occurs in the Persian Gulf.

References

  1. ↑ Philippi, Conchyl. Cab., p. 317, t. 45, f. 5.
  2. 1 2 Bouchet, P. (2014). Trochus firmus Philippi, 1849. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=723681 on 2014-06-15
  3. ↑ H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Trochus (Infundibulops) firmus)
  • Bosch D.T., Dance S.P., Moolenbeek R.G. & Oliver P.G. (1995) Seashells of eastern Arabia. Dubai: Motivate Publishing. 296 pp.
  • World Register of Marine Species
  • "Trochus firmus". Gastropods.com. Retrieved 16 January 2019.
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