Bock, P. (2021). World List of Bryozoa. Umbonula verrucosa (Esper, 1790). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=159910 on 2026-10-03
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Umbonula verrucosa (Esper, 1790). Accessed at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=159910 on 2026-10-03
basis of recordBrunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. <em>Canadian Special Publication of Fisheries and Aquatic Sciences, 126.</em> 405 pp. (look up in IMIS) [details] Available for editors
additional sourceLiu, J.Y. [Ruiyu] (ed.). (2008). [Checklist of marine biota of China seas]. <em>China Science Press.</em> 1267 pp. (look up in IMIS) [details] Available for editors
Present Inaccurate Introduced: alien Containing type locality