The UK Marine Environmental Data and Information Network (2025). Marine Species of the British Isles and Adjacent Seas (MSBIAS): a checklist of species derived from the UNICORN and Marine Recorder applications.
Psolus valvatus Östergren, 1904. Accessed at: https://www.marinespecies.org/msbias/aphia.php?p=taxdetails&id=124715 on 2025-05-29