basis of recordMonniot, C. (2001). Ascidiacea & Sorberacea. <em>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.</em> 50: pp. 352-355. (look up in IMIS) [details]
additional sourceSanamyan, K. (2007). Database of extant Ascidiacea. Version of 2 November 2007. (look up in IMIS) [details]
additional sourceHayward, P.J. & J.S. Ryland (Eds.). (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. <em>Clarendon Press: Oxford, UK.</em> 627 pp. (look up in IMIS) [details] Available for editors
Present Inaccurate Introduced: alien Containing type locality