#4583 · 🐌 snails, slugs & other molluscs
Rounded Snail
🇳🇱 Boerenknoopje ·Gonyodiscus rotundatus
9 photos from iNaturalist (Creative Commons) · credits & licences
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 267 times in the Netherlands on iNaturalist: the #15 most seen of the snails, slugs & other molluscs in NL.
- 9,679 observations worldwide on iNaturalist.
- Scientifically named by Otto Friedrich Müller in 1774 (252 years ago).
fact sheet
- English
- Rounded Snail
- Nederlands
- Boerenknoopje
- scientific name
- Gonyodiscus rotundatus
- class
- Gastropoda
- order
- Stylommatophora
- family
- Discidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 267
- sightings in Europe
- 6,094
- sightings worldwide
- 9,679
- GBIF records in NL
- 6,520
- weight
- —
- length
- —
- lifespan
- —
- named
- 1774 by Otto Friedrich Müller
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
Sources: iNaturalist taxon 1533950, Wikidata Q1300744, GBIF 2294144, Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.