N. J. Marley, R. Bertolani, and D. R. Nelson, “Designation of Pseudobiotus kathmanae Nelson, Marley & Bertolani, 1999 as the type species for the genus Pseudobiotus Nelson, 1980 (Tardigrada)”, Zootaxa, vol. 1940, no. 1, pp. 41–47, Nov. 2008.