Critically Endangered
Bythinella cylindrica
Bythinella cylindrica
Bythinella cylindrica is a snail in the family Bythinellidae (order Littorinimorpha), recorded as Critically Endangered and tied to Austria, Croatia, and Germany.
The sea or spring snail
This snail order mixes marine periwinkles with tiny freshwater and spring taxa. The shared trait is an operculum in most families.
Gastropods are snails and slugs. The animal is the soft body; the shell, when present, is grown, not worn like a stone.
Range and habitat
This species is endemic to Austria.
GBIF currently lists 246 occurrence points. Those points follow where people logged the taxon — museum drawers and surveys included — not a closed range boundary.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Diet
Snails move on a single foot and feed with a rasping tongue. Island and spring species rarely recolonise once the site is emptied.
In crisis
Bythinella cylindrica is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Bythinella cylindrica — often a short stub, Wikidata item Q308389 and GBIF occurrence geography. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
