Alvania beyrichii is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.MolluscaBase eds. (2024). MolluscaBase. Alvania beyrichii (Bosquet, 1859) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1376484 on 2024-02-08
Description
The length of the shell attains 1.6 mm, its diameter 1.2 mm.
Their functional type is Benthos.
Their feeding type was a grazer and also a detritus feeder. Distribution Fossils of this species were found in Lower Oligocene strata in Belgium.
References
Glibert, M. and J. de Heinzelin de Braucourt. (1954). L'Oligocène Inférieur Belge. Volume Jubilaire Victor van Straelen. 281–438; plates I-VII. 97; plates I-X.
External links Bosquet, J. (1859). Recherches paléontologiques sur le terrain tertiaire du Limbourg Néerlandais. Verhandelingen der Koninklijke Akademie van Wetenschappen. 7: 1-30.