{{Short description|Species of gastropod}} {{Speciesbox | image = | image_caption = | taxon = Alvania interrupta | authority = (H. J. Finlay, 1924) |extinct=yes | synonyms_ref = | synonyms = * † ''Alvania (Linemera) interrupta'' <small>(H. J. Finlay, 1924)</small> alternate representation * † ''Linemera interrupta'' <small>Finlay, 1924</small> * † ''Rissoa gradata'' <small>F. W. Hutton, 1885</small> (invalid: not d'Orbigny, 1842) |display_parents= 3 }}
'''''Alvania interrupta''''' is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.<ref name="WoRMS">{{cite taxon |WoRMS |title=''Alvania interrupta'' (H. J. Finlay, 1924) † |id=832775 |access-date=2024-02-14}}</ref>
==Description== This species is characterized by its irregularly placed spiral ribs—these are crowded anteriorly but almost absent posteriorly, so that the spire whorls have only two distinct ribs close to the suture below. There are, however, traces of faint, flattish ribs with linear interstices between these and the suture above, and a distinct groove crosses the ribs just below the suture.<ref>{{cite journal |url=https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1924-55.2.10.1.34 |last1=Finlay |first1=H.J. |year=1924 |title=New Zealand Tertiary Rissoids |journal=Transactions and Proceedings of the Royal Society of New Zealand |volume=55 |pages=480–494}}{{source-attribution}} {{PD-notice}}</ref>
==Distribution== Fossils of this marine species were found in Tertiary strata in New Zealand
==References== {{Reflist}}
==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.]
{{Taxonbar|from1=Q124535887}}
interrupta Category:Gastropods described in 1924 Category:Gastropods of New Zealand Category:Taxa named by Harold John Finlay