Alvania interrupta
{{Short description|Species of gastropod}}
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| taxon = Alvania interrupta
| authority = (H. J. Finlay, 1924)
|extinct=yes
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| synonyms =
- † Alvania (Linemera) interrupta (H. J. Finlay, 1924) alternate representation
- † Linemera interrupta Finlay, 1924
- † Rissoa gradata F. W. Hutton, 1885 (invalid: not d'Orbigny, 1842)
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Alvania interrupta is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.MolluscaBase eds. (2024). MolluscaBase. Alvania interrupta (H. J. Finlay, 1924) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=832775 on 2024-02-14
Description
This species is characterized by its irregularly-placed spiral ribs, these being crowded anteriorly, but almost absent posteriorly, so that spire-whorls have only two distinct ribs close to suture below. There are, however, traces of faint flattish ribs with linear interstices between these and suture above, and a distinct groove crosses ribs just below suture. [http://rsnz.natlib.govt.nz/volume/rsnz_55/rsnz_55_00_004890.html Finlay H.J. (1924). New Zealand Tertiary rissoids. Transactions of the New Zealand Institute. 55: 480-494.] {{source-attribution}}
Distribution
Fossils of this marine species were found in Tertiary strata in New Zealand
References
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External links
- [http://rsnz.natlib.govt.nz/volume/rsnz_17/rsnz_17_00_004870.html Hutton, F. W. (1885). Descriptions of new Tertiary shells. Part 1. Transactions of the New Zealand Institute 17: 313-324.]
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