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Species · Molluscs

Thick Top Shell

Phorcus lineatus

2,926Records since 2000
SeptemberPeak month
39Counties with records

When it is recorded

Jan20
Feb58
Mar120
Apr236
May337
Jun486
Jul418
Aug203
Sep514
Oct352
Nov84
Dec75

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

Where it is recorded

#CountyNationRecordsShare
1Cornwall England299
2Devon England254
3Pembrokeshire Wales125
4Plymouth England125
5Isles of Scilly England106
6Ards and North Down Northern Ireland103
7Dumfries and Galloway Scotland76
8Ceredigion Wales63
9Dorset England57
10Gwynedd Wales46
11Newry, Mourne and Down Northern Ireland42
12Swansea Wales40
13Highland Scotland37
14East Lothian Scotland34
15Fife Scotland33
463 England3 Scotland410 Wales116 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 39 counties in all.

About this species

Records since 2000
2,926
Peak month
September
Counties with records
39
Scientific name
Phorcus lineatus
Group
Molluscs
NBN Atlas records since 2000
2,654
Conservation designations
GB Red List (2001 IUCN criteria)
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Trochida
Family
Trochidae
Genus
Phorcus
Name with authority
Phorcus lineatus (da Costa, 1778)
Described
1778
Contributing datasets
40

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q7187373 · GBIF 7992320