Aplidium Savigny, 1816 (additional source)
Asajirus Kott, 1989 (basis of record)
Ascidiidae Herdman, 1882 (basis of record)
Cionidae Lahille, 1887 (additional source)
Didemnidae Giard, 1872 (additional source)
Hexacrobylidae Seeliger, 1906 accepted as Molgulidae Lacaze-Duthiers, 1877 (basis of record)
Holozoidae Berrill, 1950 (basis of record)
Molgulidae Lacaze-Duthiers, 1877 (basis of record)
Oligotrema Bourne, 1903 (basis of record)
Polycitor vitreus (Sars, 1851) accepted as Eudistoma vitreum (Sars, 1851) (basis of record)
Polycitoridae Michaelsen, 1904 (basis of record)
Polyclinidae Milne Edwards, 1841 (basis of record)
Pyuridae Hartmeyer, 1908 (basis of record)
Styelidae Herdman, 1881 (basis of record)
Vorticella Linnaeus, 1767 (basis of record)