Cratidentium ocellinum

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Cratidentium ocellinum
Cantharidella ocellata 001.png
Original image of a shell of Cratidentium ocellinum
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: Cratidentium
Species:
C. ocellinum
Binomial name
Cratidentium ocellinum
(Hedley, 1911)
Synonyms
  • Cantharidella ocellina(Hedley, 1911)
  • Gibbula ocellinaHedley, C. 1911

Cratidentium ocellinum, common name the eyelet top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. [1]

Contents

Description

The size of the shell attains 4 mm. The small, solid, imperforate shell has a conical shape with a gradate spire with five whorls. It is prominently keeled at the periphery and again at the shoulder. Below the periphery the colour is uniform buff, above it broad, radial stripes of buff pink, alternate with white. Along the periphery are pairs of dashes of madder brown, sometimes these enclose a tinted space and have a background of opaque white, thus assuming an ocellated aspect. The apex is pink. The base of the shell shows seven fiat evenly-spaced concentric riblets. A strong, revolving cord defines the periphery and ascends the spire. The last and penultimate whorls have four spiral riblets above the periphery, the uppermost stronger and forming the angle of a subsutural shelf. The upper whorls are smooth. The aperture is round. The simple outer lip is dentate by the spirals. The columella is perpendicular. [2]

Distribution

This marine species is endemic to Australia and occurs off South Australia.

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References

  1. ↑ "Cratidentium ocellinum". WoRMS. World Register of Marine Species . Retrieved 23 December 2023.
  2. ↑ Hedley C. (1911)Report on the Mollusca obtained by the F.I.S. 'Endeavour' chiefly off Cape Wiles South Australia. Part 1; Zoological Results of the Fisheries Experiments 'Endeavour' (described as Gibbula ocellina)
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