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Species · Molluscs

Margined Ramshorn

Planorbis planorbis

2,217Records since 2000
MayPeak month
75Counties with records
Least ConcernIUCN Red List

When it is recorded

Jan27
Feb27
Mar80
Apr259
May491
Jun459
Jul267
Aug134
Sep191
Oct96
Nov54
Dec91

GBIF records by month, 2000–2025 (all years combined).

Where it is recorded

#CountyNationRecordsShare
1Norfolk England310
2Somerset England190
3Kent England104
4Cambridgeshire England81
5Suffolk England74
6Dumfries and Galloway Scotland66
7Worcestershire England63
8Monmouthshire Wales61
9Doncaster England56
10Lincolnshire England39
11East Riding of Yorkshire England38
12Oxfordshire England37
13Isle of Anglesey Wales34
14Gloucestershire England32
15Nottinghamshire England30
1,717 England98 Scotland385 Wales9 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 75 counties in all.

About this species

Records since 2000
2,217
Peak month
May
Counties with records
75
IUCN Red List
Least Concern
Scientific name
Planorbis planorbis
Group
Molluscs
NBN Atlas records since 2000
2,204
Conservation designations
GB Red List (2001 IUCN criteria)
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Family
Planorbidae
Genus
Planorbis
Name with authority
Planorbis planorbis (Linnaeus, 1758)
Described
1758
Contributing datasets
26

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q820437 · GBIF 8298325