(of)Milne Edwards, H. (1841). Observations sur les Ascidies composées des côtes de la Manche. <em>Mémoires de l'Académie des Sciences de l'Institut de France.</em> 18: 217-326., available online athttps://doi.org/10.5962/bhl.title.6289[details]
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2025). Ascidiacea World Database. Pycnoclavella producta (Milne Edwards, 1841). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://marbef.org/data/aphia.php?p=taxdetails&id=422928 on 2026-10-09
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Pycnoclavella producta (Milne Edwards, 1841). Accessed at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=422928 on 2026-10-09
original description(of)Milne Edwards, H. (1841). Observations sur les Ascidies composées des côtes de la Manche. <em>Mémoires de l'Académie des Sciences de l'Institut de France.</em> 18: 217-326., available online athttps://doi.org/10.5962/bhl.title.6289[details]
basis of recordPérez-Portela, R.; Turon, X. (2008). Phylogenetic relationships of the Clavelinidae and Pycnoclavellidae (Ascidiacea) inferred from mtDNA data. <em>Invertebrate Biology.</em> 127(1): 108-120.[details] Available for editors
Present Inaccurate Introduced: alien Containing type locality
Present 