Abyssascidia Herdman, 1880 (additional source)
Agnezia Monniot C. & Monniot F., 1991 (basis of record)
Agneziidae Monniot C. & Monniot F., 1991 (basis of record)
Anomopera Hartmeyer, 1923 (additional source)
Aplidiopsis Lahille, 1890 (additional source)
Aplidium Savigny, 1816 (additional source)
Araneum Monniot C. & Monniot F., 1973 (basis of record)
Archiascidia Julin, 1904 accepted as Pycnoclavella Garstang, 1891 (basis of record)
Archidistoma Garstang, 1891 (additional source)
Asajirus Kott, 1989 (basis of record)
Ascidiella Roule, 1884 (additional source)
Ascidiidae Herdman, 1882 (basis of record)
Asterocarpa Brewin, 1946 (basis of record)
Bathyoncus Herdman, 1882 (additional source)
Bathystyeloides Seeliger, 1907 (additional source)
Botryllus leachii (Savigny, 1816) accepted as Botrylloides leachii (Savigny, 1816) (basis of record)
Cionidae Lahille, 1887 (additional source)
Clavelina Savigny, 1816 (additional source)
Clavelinidae Forbes & Hanley, 1848 (additional source)
Dextrogaster Monniot F., 1962 (additional source)
Diazona Savigny, 1816 (additional source)
Diazonidae Seeliger, 1906 (additional source)
Didemnidae Giard, 1872 (additional source)
Hemistyela Millar, 1955 (basis of record)
Hexacrobylidae Seeliger, 1906 accepted as Molgulidae Lacaze-Duthiers, 1877 (basis of record)
Holozoidae Berrill, 1950 (basis of record)
Minipera Monniot C. & Monniot F., 1974 (basis of record)
Molgulidae Lacaze-Duthiers, 1877 (basis of record)
Octacnemidae (basis of record)
Oligotrema Bourne, 1903 (basis of record)
Pareugyroides Hartmeyer, 1914 accepted as Pareugyrioides Hartmeyer, 1914 (basis of record)
Perophora Wiegmann, 1835 (basis of record)
Perophoridae Giard, 1872 (basis of record)
Polycarpa aernbaeckae Monniot F., 1964 accepted as Polycarpa arnbackae Monniot F., 1964 (basis of record)
Polycitoridae Michaelsen, 1904 (basis of record)
Polyclinidae Milne Edwards, 1841 (basis of record)
Proagnesia Millar, 1955 (additional source)
Protoholozoa Kott, 1969 (additional source)
Pseudodiazona Millar, 1963 (basis of record)
Pseudodistoma Michaelsen, 1924 (additional source)
Pseudodistomidae Harant, 1931 (basis of record)
Pycnoclavella Garstang, 1891 (additional source)
Pycnoclavellidae Kott, 1990 accepted as Clavelinidae Forbes & Hanley, 1848 (basis of record)
Pyuridae Hartmeyer, 1908 (basis of record)
Rhodosoma Ehrenberg, 1828 (basis of record)
Rhopalaea Philippi, 1843 (additional source)
Ritterella Harant, 1931 (additional source)
Ritterellidae Kott, 1992 (basis of record)
Situla Vinogradova, 1969 (basis of record)
Styelidae Herdman, 1881 (basis of record)
Sycozoa Lesson, 1832 (additional source)
Tylobranchion Herdman, 1886 (additional source)