Zeradina costellata

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Zeradina costellata
Zeradina costellata 001.jpg
Shell of Zeradina costellata (holotype)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Vanikoroidea
Family: Vanikoridae
Genus: Zeradina
Species:
†Z. costellata
Binomial name
†Zeradina costellata
(F. W. Hutton, 1885)
Synonyms

† Aclis costellataF. W. Hutton, 1885

Zeradina costellata is an extinct species of sea snail, a marine gastropod mollusk in the family Vanikoridae. [1]

Contents

Description

(Original description) The minute shell is subulate. It contains six rounded whorls. The first two are smooth and polished, the rest spirally grooved. The spire whorls with the two posterior spiral grooves are deeper and broader than the others, and the rib between them is raised higher. They are crossed by delicate longitudinal plications. The body whorl is like those of the spire. The whole of the base is very finely spirally grooved. The suture is well marked. The aperture is ovate and less than half the length of the shell. The columella is arched. The umbilicus is covered. [2]

Distribution

Fossils of this marine species were found in Tertiary strata at Whanganui, New Zealand.

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References

  1. ↑ MolluscaBase eds. (2023). MolluscaBase. Zeradina costellata (F. W. Hutton, 1885) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=830534 on 2023-11-19
  2. ↑ Hutton, F. W. (1885). Descriptions of new Tertiary shells. Part 1. Transactions of the New Zealand Institute 17: 313-324
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