| Citation | NBN Atlas, 2019 Littorina compressa Occurrence records. https://northernireland-records.nbnatlas.org/occurrences/search?q=lsid%3ANHMSYS0021055453&fq=year%3A%222009%22&qc=cl28%3A%22Northern%20Ireland%22&fq=taxon_name%3A%22Littorina+compressa%22 [Accessed 10/10/2019]. |
| Ref. | 121098 NBN Atlas, 2019 |
| Page | |
| Named Used as Valid | Littorina compressa |
| Locality | |
| Distribution | northern Ireland. |