Kroh, A.; Mooi, R. (2023). World Echinoidea Database. Hygrosoma Mortensen, 1903. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2023) European Register of Marine Species at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=123400 on 2023-06-09
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2023). European Register of Marine Species. Hygrosoma Mortensen, 1903. Accessed at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=123400 on 2023-06-09
basis of recordHansson, H.G. (2001). Echinodermata, <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. 336-351. (look up in RoR) [details]
additional sourceRowe, F. W. E.; Gates, J. (1995). Echinodermata. <em>In ‘Zoological Catalogue of Australia'.</em> 33 (Ed A. Wells.) pp xiii + 510 (CSIRO Australia, Melbourne).[details]
Present Inaccurate Introduced: alien Containing type locality