#4618 · 🐌 snails, slugs & other molluscs
Common Door-snail
🇳🇱 Vale clausilia ·Clausilia bidentata
📍 Zuid-Holland, Nederland
📍 Oost, Utrecht, Nederland
📍 Noordwijkerhout, Zuid-Holland, Netherlands
📍 Wassenaar, Zuid-Holland, Netherlands
📍 Oost, Utrecht, Nederland
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Christophe Quintin · CC BY-NC 4.0
- 2. © Gargominy O. · CC BY 4.0
- 3. © Maëlan ADAM · CC BY-NC 4.0
- 4. © José Ferreira · CC BY-NC 4.0
- 5. © H. Zell · CC BY-SA 4.0
- 6. Zuid-Holland, Nederland:© Rob Westerduijn · CC BY-NC 4.0
- 7. Oost, Utrecht, Nederland:© Mathijs Zonneveld · CC BY 4.0
- 8. Noordwijkerhout, Zuid-Holland, Netherlands:© Michel Langeveld · CC BY 4.0
- 9. Wassenaar, Zuid-Holland, Netherlands:© Michel Langeveld · CC BY 4.0
- 10. Oost, Utrecht, Nederland:© Mathijs Zonneveld · CC BY 4.0
what is it?
Clausilia bidentata , the 'Two Toothed Door Snail' is a species of door snails, terrestrial pulmonate gastropod mollusks in the genus Clausilia belonging to the family Clausiliidae, all of which have a clausilium.
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- Spotted 81 times in the Netherlands on iNaturalist: the #50 most seen of the snails, slugs & other molluscs in NL.
- 3,649 observations worldwide on iNaturalist.
- Scientifically named by Hans Strøm in 1765 (261 years ago).
fact sheet
- English
- Common Door-snail
- Nederlands
- Vale clausilia
- scientific name
- Clausilia bidentata
- class
- Gastropoda
- order
- Stylommatophora
- family
- Clausiliidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 81
- sightings in Europe
- 2,060
- sightings worldwide
- 3,649
- GBIF records in NL
- 3,171
- weight
- —
- length
- —
- lifespan
- —
- named
- 1765 by Hans Strøm
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Clausiliidae
Sources: iNaturalist taxon 336825, Wikidata Q3197420, GBIF 4571002, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.