original description(of)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. BioInvasions Records. 1: 235-245., available online athttp://easin.jrc.ec.europa.eu[details] Available for editors
basis of recordHayward, P.J. (2001). Entoprocta, in: Costello, M.J. et al. (Ed.) (2001). 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, 50: pp. 179-180 (look up in RoR) [details]
additional sourceNielsen, C. (1989). Entoprocts: keys and notes for the identification of the species. Synopses of the British fauna (New Series). 41, 131p. (look up in RoR) [details]