Zenkevitch L. A. (1966). The systematics and distribution of abyssal and hadal (ultra-abyssal) Echiuroidea. <em>Galathea Report.</em> 8: 175–184., available online athttp://www.zmuc.dk/InverWeb/Galathea/Galathea_p3.html[details] Available for editors
original descriptionZenkevitch L. A. (1966). The systematics and distribution of abyssal and hadal (ultra-abyssal) Echiuroidea. <em>Galathea Report.</em> 8: 175–184., available online athttp://www.zmuc.dk/InverWeb/Galathea/Galathea_p3.html[details] Available for editors
context source (Deepsea)Murina V.V. (2014). Deep-sea fauna of European seas: an annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Echiura. <em>Invertebrate Zoology.</em> 11(1): 130–133., available online athttp://kmkjournals.com/journals/Inv_Zool/IZ_Index_Volumes/IZ_11/IZ_11_1_130_133_Echiura[details] Available for editors