↑ 2.02.1Marcus, E. (1936) Tardigrada, Das Tierreich, 66
↑ 3.03.1Mathews, G. B. (1938) Tardigrada from North America, American Midland Naturalist, vol. 19, no. 3
↑Packard, A. S., Jr. (1873) Discovery of a Tardigrade, American Naturalist, vol. 7, no. 12
↑Higgins, Robert P. (1959) Life History of Macrobioticus islandicus Richters With Notes on Other Tardigrades From Colorado, Transactions of the American Microscopical Society, vol. 78, no. 2
↑ 6.06.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
↑ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 26 Abril 2011