Swalla, B.J.; van der Land, J. (2025). Hemichordata World Database. Cephalodiscoidea. Accessed through: RAS (Eds.) (2025) Register of Antarctic Species at: https://ras.biodiversity.aq/aphia.php/www.pfeil-verlag.de/04biol/rest/aphia.php?p=taxdetails&id=579850 on 2025-07-05