Cirsonella carinata

Cirsonella carinata
Original drawing of a shell of Cirsonella carinata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Superfamily: Trochoidea (superfamily)
Family: Skeneidae
Genus: Cirsonella
Species: C. carinata
Binomial name
Cirsonella carinata
(Hedley, 1903)
Synonyms
  • Crossea carinata Hedley, C. 1903
  • Crosseola carinata Iredale, T. & McMichael, D.F. 1962

Cirsonella carinata, common name the ridged false-top-shell, is a species of minute sea snail, a marine gastropod mollusk in the family Skeneidae.[1]

Description

The height of the shell attains 1.7 mm, its diameter 1.8 mm. The minute, smooth and glossy, cream-colored shell has a turbinate shape. The four whorls have an impressed suture. The body whorl is bluntly keeled at the periphery. There is a sculpture of dense spiral microscopic striae. The base of the shell is rounded. The umbilicus is narrow and deep, and it is surrounded by a callus funicle which expands anteriorly to join the simple lip in an angular lobe. The aperture is subcircular.[2]

Distribution

This marine species occurs off New South Wales, South Australia, Tasmania, Victoria, Australia, at depths between 73 m and 200 m.

References

External links

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