original description
(of Spirorbis clavus Harris, 1968) Harris, Tegwyn 1968. Spirorbis species (Polychaeta: Serpulidae) farom the Bay of Naples with description of a new species. Pubblicazioni della Stazione Zoologica di Napoli 36: 188-207. [details]
basis of record
Bellan, G. (2001). Polychaeta, <i>in</i>: Costello, M.J. <i>et al.</i> (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. <em>Collection Patrimoines Naturels.</em> 50: 214-231. (look up in IMIS) [details]
additional source
Knight-Jones, Phyllis. (1984). A new species of Protoleodora (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 at https://academic.oup.com/zoolinnean/article-abstract/80/2-3/109/2703213 [details]
From editor or global species database