Amphicarpa nodula Kott, 1985 accepted as Stolonica nodula (Kott, 1985) (basis of record)
Didemnum pseudodiplosoma Kott, 1962 accepted as Trididemnum pseudodiplosoma (Kott, 1962) (additional source)
Didemnum sucosum Kott, 2001 (source of synonymy)
Didemnum ternerratum Kott, 2001 (source of synonymy)
Eusynstyela grandis Kott, 1990 (basis of record)
Holothurium zonarium Pallas, 1774 accepted as Soestia zonaria (Pallas, 1774) (new combination reference)
Iasis Savigny, 1816 (basis of record)
Iasis cylindrica (Cuvier, 1804) (basis of record)
Iasis zonaria (Pallas, 1774) accepted as Soestia zonaria (Pallas, 1774) (basis of record)
Ihlea Metcalf, 1919 (basis of record)
Metcalfina Ihle & Ihle-Landenberg, 1933 (basis of record)
Monandrocarpa plana (Kott, 1973) (basis of record)
Polyandrocarpa sparsa Kott, 1985 (basis of record)
Polyandrocarpa watsonia Kott, 1985 (basis of record)
Polycarpa biforis (Sluiter, 1904) (basis of record)
Polycarpa decipiens Herdman, 1906 (basis of record)
Polycarpa directa Kott, 1990 (additional source)
Polycarpa flava Kott, 1985 (additional source)
Polycarpa fungiformis Herdman, 1898 (basis of record)
Polycarpa hartmeyeri Michaelsen, 1927 (additional source)
Polycarpa intonata Kott, 1985 (basis of record)
Polycarpa longiformis Tokioka, 1952 (basis of record)
Polycarpa nota Kott, 1985 (basis of record)
Polycarpa papyra Kott, 1985 (basis of record)
Polycarpa plenovata Kott, 1985 (basis of record)
Polycarpa sobria (Sluiter, 1904) (source of synonymy)
Polycarpa stirpes Kott, 1985 (basis of record)
Pyura gibbosa draschii Kott, 1972 (basis of record)
Pyura pachydermatina draschii Kott, 1972 accepted as Pyura gibbosa draschii Kott, 1972 (source of synonymy)
Salpa Forskål, 1775 (basis of record)
Salpa caboti Desor, 1848 accepted as Thalia democratica (Forskål, 1775) (source of synonymy)
Salpidae Lahille, 1888 (basis of record)
Salpinae Lahille, 1888 (basis of record)
Soestia Kott, 1998 (original description)
Soestia zonaria (Pallas, 1774) (basis of record)
Synoicum saxeum Kott, 1998 (original description)
Thalia Blumenbach, 1798 (basis of record)
Thaliacea (basis of record)
Thetys Tilesius, 1802 (basis of record)
Trididemnum miniatum Kott, 1977 (basis of record)
Trididemnum pseudodiplosoma (Kott, 1962) (additional source)
Weelia Yount, 1954 accepted as Iasis Savigny, 1816 (source of synonymy)

Australia for Botrylloides violaceus Oka, 1927  (origin: alien)
Australian part of Bass Strait for Ascidiella aspersa (Müller, 1776)  (origin: alien)
Australian part of the Tasman Sea for Styela plicata (Lesueur, 1823)  (origin: alien)
Broadhurst Reef for Polycarpa aurata (Quoy & Gaimard, 1834) 
Ireland for Ascidiella aspersa (Müller, 1776)  (origin: alien)
Italian part of the Adriatic Sea for Styela plicata (Lesueur, 1823)  (origin: alien)
Lizard Island (Queensland) for Polycarpa aurata (Quoy & Gaimard, 1834) 
Mediterranean Sea for Styela canopus (Savigny, 1816)  (origin: alien)
South Australia for Didemnum pseudodiplosoma Kott, 1962 
Swain Reefs for Polycarpa aurata (Quoy & Gaimard, 1834) 

Paratype AM Y1526, geounit South Australia, identified as Didemnum pseudodiplosoma Kott, 1962
Holotype AM Y1527, geounit South Australia, identified as Didemnum pseudodiplosoma Kott, 1962
Unknown type MNHN A2 Tri-150, geounit Papua New Guinean part of the Coral Sea, identified as Trididemnum pseudodiplosoma (Kott, 1962)
Unknown type QM GH3818, geounit South Australia, identified as Trididemnum pseudodiplosoma (Kott, 1962)
Syntype SAMA SAM E2616, geounit Yorke Peninsula, identified as Trididemnum spumosum Kott, 2001
Holotype SAMA SAM E2834, geounit West Island, identified as Trididemnum tectum Kott, 2001

 Synonymy

 for Didemnum sucosum Kott, 2001

Kott, 1998: Didemnum spongioides [details]

 Synonymy

 for Didemnum ternerratum Kott, 2001

Kott, 1998: Didemnum roberti (part, Bass Strait and Great Australian Bight recordes). [details]

 Synonymy

 for Polycarpa longiformis Tokioka, 1952

Kott, 1998: Polycarpa molguloides [details]

 Synonymy

 for Polycarpa sobria (Sluiter, 1904)

Kott, 1998: Styela sobria. [details]