Bock, P. (2021). World List of Bryozoa. Penetrantioidea Silén, 1946. Accessed through: VLIZ Belgian Marine Species Consortium (2010 onwards) Belgian Register of Marine Species at: http://www.marinespecies.org/berms/aphia.php?p=taxdetails&id=827154 on 2024-05-16
VLIZ Belgian Marine Species Consortium (2010 onwards). Belgian Register of Marine Species. Penetrantioidea Silén, 1946. Accessed at: https://www.marinespecies.org/berms/aphia.php?p=taxdetails&id=827154 on 2024-05-16