Silén, L. (1946). On two groups of Bryozoa living in Shells of Molluscs. <em>Arkiv för Zoologi. Stockholm.</em> 38B(1): 1-7. (look up in IMIS) [details] Available for editors [request]
Bock, P. (2024). World List of Bryozoa. Penetrantia densa Silén, 1946. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=470690 on 2024-09-03
original descriptionSilén, L. (1946). On two groups of Bryozoa living in Shells of Molluscs. <em>Arkiv för Zoologi. Stockholm.</em> 38B(1): 1-7. (look up in IMIS) [details] Available for editors [request]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality