Alvania perregularis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.MolluscaBase eds. (2024). MolluscaBase. Alvania perregularis Sacco, 1895 †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=957103 on 2024-02-08
Variety † Alvania perregularis var. varicosa Friedberg, 1923 (taxon inquirendum)
Distribution Fossils of this species were found in Tortonian strata (Miocene) near Steinbrunn, Austria.
References
Landau, B. M., Harzhauser, M., İslamoğlu, Y. & da Silva, C. M. (2013). Systematics and palaeobiogeography of the gastropods of the middle Miocene (Serravallian) Karaman Basin, Turkey. Cainozoic Research. 11-13: 1–584.
External links Sacco, F. (1895). I Molluschi dei terreni terziarii del Piemonte e della Liguria. Parte XVIII. (Melaniidae, Littorinidae, Fossaridae, Rissoidae, Hydrobiidae, Paludinidae e Valvatidae). Torino: Carlo Clausen. 51 pp., 1 p Glibert, M. (1962). Les Mesogastropoda fossiles du Cénozoïque étranger des collections de l'Institut Royal des Sciences Naturelles de Belgique. Première partie. Cyclophoridae à Stiliferidae (inclus). Institut Royal des Sciences naturelles de Belgiques, Mémoires. Deuxième série. 69: 1-305 Kovács, Z.; Stein, G. (2023). Middle Miocene Rissooidea (Caenogastropoda) of Letkés (Hungary). Földtani Közlöny. 153(1): 19-34