original description
(of Gonypodaria ramosa Robertson, 1900) Robertson, A. (1900). Studies in Pacific Coast Entoprocta. Proceedings of the California Academy of Sciences, 2: 232-348 [details]
context source (Introduced species)
Katsanevakis, S.; Bogucarskis, K.; Gatto, F.; Vandekerkhove, J.; Deriu, I.; Cardoso A.S. (2012). Building the European Alien Species Information Network (EASIN): a novel approach for the exploration of distributed alien species data. <em>BioInvasions Records.</em> 1: 235-245., available online at http://easin.jrc.ec.europa.eu [details] Available for editors
[request]
basis of record
Hayward, P.J. (2001). Entoprocta, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 179-180 (look up in IMIS) [details]
additional source
Nielsen, C. (1989). Entoprocts: keys and notes for the identification of the species. <em>Synopses of the British fauna (New Series).</em> 41, 131p. (look up in IMIS) [details]
From regional or thematic species database
Introduced species vector dispersal in Belgian part of the North Sea : Shipping [details]