basis of record
Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. <em>Commission RĂ©gionale de Biologie RĂ©gion Nord Pas-de-Calais: France.</em> 307 pp., available online at http://www.vliz.be/imisdocs/publications/145561.pdf [details]
additional source
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
From editor or global species database
Taxonomy d'Hondt, Jean-Loup : For me it is a valid, but unsufficiently described species, firstly by Giard (1904) and later by myself (at the occasion on my first observations on this taxon - and with an insufficient optic material ...-). In my opinion, it is probably a senior synonym of Halichaetonotus pleuracanthus (Remane). [details]