Pixell, Helen L. M. (1912). Polychaeta from the Pacific coast of North America. Part I. Serpulidae, with a revised table of classification of the genus Spirorbis. <em>Proceedings of the Zoological Society of London.</em> [1912 part 3-4]: 784-805, plates 87-89 [follow p.784]., available online athttp://biodiversitylibrary.org/page/32119350[details]
Read, G.; Fauchald, K. (Ed.) (2021). World Polychaeta database. Spirorbis (Laeospira) medius Pixell, 1912. 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=332140 on 2026-07-16
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Spirorbis (Laeospira) medius Pixell, 1912. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=332140 on 2026-07-16
original descriptionPixell, Helen L. M. (1912). Polychaeta from the Pacific coast of North America. Part I. Serpulidae, with a revised table of classification of the genus Spirorbis. <em>Proceedings of the Zoological Society of London.</em> [1912 part 3-4]: 784-805, plates 87-89 [follow p.784]., available online athttp://biodiversitylibrary.org/page/32119350[details]
source of synonymyKnight-Jones, Phyllis. (1984). A new species of <i>Protoleodora</i> (Spirorbidae: Polychaeta) from Eastern U.S.S.R., with a brief revision of related genera. <em>Zoological Journal of the Linnean Society, London.</em> 80(2-3): 109-120., available online athttps://doi.org/10.1111/j.1096-3642.1984.tb01967.x[details] Available for editors
Present Inaccurate Introduced: alien Containing type locality
Present