Borysthenia is a genus of small freshwater snails with an operculum, aquatic gastropod mollusks in the family Valvatidae, the valve snails.
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| Subfossil shells of Borysthenia naticina | |
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| Genus: | Borysthenia |
The aperture of Borysthenia is not circular.[3] Animals are ovoviviparous.[3]
Species
editThe genus Borysthenia contains the following species:
- † Borysthenia goldfussiana (Wüst, 1901)
- † Borysthenia intermedia Kondrashov, 2007 - from the Middle Pleistocene of Oka-Don Plain[1]
- Borysthenia menkeana (Jelski, 1863)
- Borysthenia naticina (Menke, 1845) - type species as Valvata jelskii Crosse, 1863[3]
References
edit- ^ a b Kondrashov P. E. (2007). "New gastropod species from the Pleistocene of the Upper Don basin". Paleontological Journal 41(5): 513-519. doi:10.1134/S0031030107050061.
- ^ Lindholm W. A. (1913). "Miszellen zur Malakozoologie des Russischen Reiches. I-XIII." Ezhegodnik Zoologicheskago Muzeya Imperatorskoj Akademii Nauk - Annuaire due Musée Zoologique de l'Académie Impériale des Sciences de St.-Pétersbourg 18(1): 151-167. page 167.
- ^ a b c "Genus summary for Borysthenia". AnimalBase, last modified 28 February 2009, accessed 22 May 2011.