Animalia
Alalcomenaeus Simonetta, 1970
Archechiniscidae
Calomacrobiotus Iharos, 1969
Cheloniellon Broili, 1932
Eutardigrada Richters, 1926
Habelia Walcott, 1912
Heteropseudechiniscus Mihelcic, 1964
Heterotardigrada Marcus, 1927
Mesotardigrada Rahm, 1937
Metapseudechiniscus Mihelcic, 1964
Odaraia Walcott, 1912
Orthomacrobiotus Biserov, 1990
Parastyarctus Renaud-Debyser, 1965
Perspicaris Briggs, 1977
Plenocaris Whittington, 1974
Renaudaratus Kristensen & Higgins, 1984
Sanctacaris Briggs & Collins, 1988
Sarotrocercus Whittington, 1981
Yohoia Walcott, 1912
