Guidetti, R.; McInnes, S.J.; Kristensen, R.M. (2025). World List of Tardigrada. Ursulinius septentrionalis (Thulin, 1928). Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1666083 on 2025-06-05
Marine Species Traits editorial board (2025). Marine Species Traits. Ursulinius septentrionalis (Thulin, 1928). Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1666083 on 2025-06-05
new combination referenceGąsiorek, P.; Stec, D.; Morek, W.; Michalczyk, Ł. (2019). Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence. <em>Contributions to Zoology.</em> 88(1): 78-132., available online athttps://doi.org/10.1163/18759866-20191350[details] Available for editors