| Nominal Species (n = 445) | Present allocation (n = 411) | Ref. |
|---|---|---|
| Dendrodoa abbotti Newberry, 1984 | Dendrodoa abbotti | 7491 |
| Polycarpa abjornseni Michaelsen, 1927 | Polyandrocarpa abjornseni | 1134 |
| Monandrocarpa abyssa Sanamyan & Sanamyan, 1999 | Monandrocarpa abyssa | 1662 |
| Cnemidocarpa acanthifera Monniot, Dettai, Eleaume, Cruaud & Ameziane, 2011 | Cnemidocarpa acanthifera | 87647 |
| Cnemidocarpa aculeata Kott, 1985 | Cnemidocarpa aculeata | 1134 |
| Styela adriatica Monniot & Monniot, 1976 | Styela adriatica | 3477 |
| Alloeocarpa aequatorialis Millar, 1953 | Alloeocarpa aequatorialis | 3663 |
| Styela aequatorialis Michaelson, | Styela aequatorialis | 3477 |
| Polycarpa aernbaeckae Monniot, 1964 | Polycarpa aernbaeckae | 19 |
| Metandrocarpa agitata Kott, 1985 | Metandrocarpa agitata | 19 |
| Stolonica agnata Kott, 1985 | Stolonica agnata | 19 |
| Eusynstyela aliena Monniot, 1991 | Eusynstyela hartmeyeri | 19 |
| Cnemidocarpa alisi Monniot, 1992 | Cnemidocarpa alisi | 7690 |
| Symplegma alterna Monniot, 1988 | Symplegma alterna | 19 |
| Stolonica aluta Kott, 1985 | Stolonica aluta | 19 |
| Cnemidocarpa amphora Kott, 1992 | Cnemidocarpa amphora | 19 |
| Cynthia ampulla Forbes & Hanley, 1848 | Polycarpa fibrosa | 3773 |
| Botrylloides anceps Herdman, 1891 | Botryllus anceps | 19 |
| Sarcobotrylloides anceps Herdman, 1891 | Botryllus anceps | 1134 |
| Bathystyeloides anfractus Monniot & Monniot, 1985 | Bathystyeloides anfractus | 19 |
| Polyandrocarpa anguinea Sluiter, 1898 | Polyandrocarpa anguinea | 19 |
| Dendrodoa annectens Hartmeyer, 1921 | Cnemidocarpa annectens | 19 |
| Botryllus anomalus Millar, 1962 | Botryllus anomalus | 3477 |
| Dicarpa antarctica Monniot & Monniot, 1976 | Dicarpa antarctica | 19 |
| Distomus antiborealis Monniot, 2001 | Distomus antiborealis | 19 |
| Styela aomori Oka, 1935 | Styela aomori | 19 |
| Bathyoncus arafurensis Monniot & Monniot, 2003 | Bathyoncus arafurensis | 2258 |
| Botryllus arenaceus Monniot, 1988 | Botryllus arenaceus | 19 |
| Polycarpa arenosa Monniot & Monniot, 1976 | Polycarpa arenosa | 3477 |
| Symplegma arenosa Kott, 1972 | Symplegma arenosa | 19 |
| Theodorella arenosa Michaelsen, 1922 | Theodorella arenosa | 19 |
| Styela areolata Heller, 1878 | Cnemidocarpa irene | 1733 |
| Styela argentata Sluiter, 1890 | Polycarpa argentata | 1733 |
| Polycarpa arnbackae Monniot, 1964 | Polycarpa arnbackae | 3477 |
| Pandocia arnoldi Michaelsen, 1914 | Polycarpa arnoldi | 1733 |
| Polycarpa aspera Herdman, 1886 | Polycarpa aspera | 19 |
| Botryllus aster Monniot, 1991 | Botryllus aster | 3477 |
| Styela asterogama Millar, 1975 | Styela asterogama | 1751 |
| Metandrocarpa asymmetra Monniot, 2001 | Metandrocarpa asymmetra | 19 |
| Dicarpa atlantica Millar, 1964 | Dicarpa atlantica | 19 |
| Polycarpa atromarginata Monniot & Monniot, 2003 | Polycarpa atromarginata | 2258 |
| Ascidia aurata Quoy & Gaimard, 1834 | Polycarpa aurata | 1134 |
| Botrylloides aureus Sars, 1851 | Botrylloides aureus | 3477 |
| Styela aurita Sluiter, 1890 | Polycarpa aurita | 1134 |
| Polyandrocarpa australiensis Kott, 1952 | Polyandrocarpa australiensis | 19 |
| Oculinaria australis Gray, 1868 | Oculinaria australis | 19 |
| Stolonica australis Michaelsen, 1927 | Stolonica australis | 19 |
| Alloeocarpa bacca Ärrnbäck, 1929 | Alloeocarpa bacca | 19 |
| Symplegma bahraini Monniot & Monniot, 1997 | Symplegma bahraini | 19 |
| Styela barbaris Kott, 1952 | Styela canopus | 19 |
| Cnemidocarpa barbata Vinogradova, 1962 | Cnemidocarpa barbata | 19 |
| Styela barnharti Ritter & Forsyth, 1917 | Styela barnharti | 19 |
| Styela bathybia Bonnevie, 1896 | Styela bathybia | 19 |
| Cnemidocarpa bathyphila Millar, 1955 | Cnemidocarpa bathyphila | 19 |
| Seriocarpa benthedi Monniot & Monniot, 1985 | Seriocarpa benthedi | 19 |
| Polycarpa beuziti Monniot, 1970 | Polycarpa beuziti | 19 |
| Styela biforis Sluiter, 1904 | Polycarpa biforis | 1134 |
| Alloeocarpa bigyna Monniot, 1978 | Alloeocarpa bigyna | 19 |
| Stolonica bigyna Monniot, & Monniot, 2001 | Stolonica bigyna | 19 |
| Polycarpa biscayensis Monniot & Monniot, 1977 | Polycarpa biscayensis | 19 |
| Diandrocarpa brakenhielmi Michaelsen, 1904 | Symplegma brakenhielmi | 1661 |
| Styela brevigaster Millar, 1988 | Styela brevigaster | 19 |
| Stolonica brevigastra Kott, 2003 | Stolonica brevigastra | 19 |
| Alloeocarpa bridgesi Michaelsen, 1900 | Alloeocarpa bridgesi | 19 |
| Styela bythia Herdman, 1881 | Cnemidocarpa bythia | 3477 |
| Styela calva Monniot, Monniot & Millar, 1976 | Styela calva | 19 |
| Polycarpa camptos Monniot, & Monniot, 2001 | Polycarpa camptos | 19 |
| Cnemidocarpa campylogona Millar, 1988 | Cnemidocarpa campylogona | 19 |
| Cynthia canopus Savigny, 1816 | Styela canopus | 1661 |
| Alloeocarpa capensis Hartmeyer, | Alloeocarpa capensis | 124 |
| Styela captiosa Sluiter, 1885 | Polycarpa papillata | 1661 |
| Ascidia carnea Agassiz, 1850 | Dendrodoa carnea | 19 |
| Stolonica carnosa Millar, 1963 | Stolonica carnosa | 19 |
| Polycarpa carpocincta Monniot & Monniot, 2003 | Polycarpa carpocincta | 2258 |
| Eusynstyela caudata Monniot & Monniot, 1975 | Eusynstyela caudata | 19 |
| Polycarpa caudata Monniot & Monniot, 1975 | Polycarpa caudata | 1398 |
| Styela chaini Monniot & Monniot, 1970 | Styela chaini | 19 |
| Styela changa Monniot & Andrade, 1983 | Styela changa | 19 |
| Styela charcoti Monniot & Monniot, 1973 | Styela charcoti | 19 |
| Cnemidocarpa chinensis Tokioka, 1967 | Polycarpa chinensis | 1134 |
| Cnemidocarpa cirrata Ärnbäck, 1922 | Cnemidocarpa cirrata | 19 |
| Styela clara Hartmeyer, 1906 | Styela clara | 19 |
| Styela clava Herdman, 1881 | Styela clava | 19 |
| Minostyela clavata Kott, 1969 | Minostyela clavata | 19 |
| Polycarpa clavata Hartmeyer, 1919 | Polycarpa clavata | 19 |
| Ypsilocarpa clipeata Ärnbäck, 1921 | Cnemidocarpa clipeata | 19 |
| Botryllus closionis Monniot, 2001 | Botryllus closionis | 19 |
| Polyandrocarpa colemani Kott, 1992 | Polyandrocarpa colemani | 19 |
| Polycarpa colletti Herdman, 1906 | Polycarpa colletti | 19 |
| Polyandrocarpa colligata Sluiter, 1913 | Polyandrocarpa colligata | 19 |
| Cnemidocarpa completa Kott, 1985 | Cnemidocarpa completa | 19 |
| Botryllus compositus Tokioka, 1967 | Botryllus compositus | 3677 |
| Cnemidocarpa concha Monniot, 2002 | Cnemidocarpa concha | 19 |
| Symplegma connectens Tokioka, 1949 | Symplegma connectens | 19 |
| Styela contecta Sluiter, 1904 | Polycarpa contecta | 1134 |
| Styela convexa Herdman, 1881 | Cnemidocarpa drygalskii | 3477 |
| Cnemidocarpa cornicula Monniot, 1978 | Dicarpa cornicula | 89903 |
| Pelonaia corrugata Goodsir & Forbes, 1841 | Pelonaia corrugata | 19 |
| Styela crinita Monniot & Monniot, 1973 | Styela crinita | 19 |
| Seriocarpa cristata Millar, 1975 | Seriocarpa cristata | 3584 |
| Polycarpa crossogonima Millar, 1962 | Polycarpa crossogonima | 3775 |
| Styela cryptocarpa Sluiter, 1885 | Polycarpa cryptocarpa | 1661 |
| Polycarpa decipiens Herdman, 1906 | Polycarpa decipiens | 19 |
| Psammostyela delamarei Weinstein, 1961 | Psammostyela delamarei | 3477 |
| Botryllus delicatus Okuyama & Saito, 2001 | Botryllus delicatus | 19 |
| Polycarpa delta Monniot & Monniot, 1968 | Polycarpa delta | 2610 |
| Cnemidocarpa devia Ärnbäck, 1931 | Cnemidocarpa devia | 19 |
| Botrylloides diegense Ritter & Forsyth, 1917 | Botryllus diegense | 19 |
| Botrylloides diegensis Ritter & Forsyth, 1917 | Botrylloides diegensis | 7507 |
| Cnemidocarpa digonas Monniot & Monniot, 1969 | Cnemidocarpa digonas | 19 |
| Distomus diptychos Hartmeyer, 1919 | Stolonica diptycha | 1134 |
| Polycarpa directa Kott, 1990 | Polycarpa directa | 19 |
| Eusynstyela discoidea Heller, 1877 | Eusynstyela discoidea | 19 |
| Polycarpa discoidea Heller, 1877 | Polycarpa discoidea | 19 |
| Tethyum drygalskii Hartmeyer, 1911 | Cnemidocarpa drygalskii | 19 |
| Bathystyeloides dubius Monniot & Monniot, 1984 | Bathystyeloides dubius | 19 |
| Stolonica duploplicata Sluiter, 1913 | Stolonica duploplicata | 19 |
| Polyandrocarpa durbanensis Millar, 1955 | Polyandrocarpa durbanensis | 1756 |
| Polycarpa ecuadorensis Millar, 1988 | Polycarpa ecuadorensis | 19 |
| Cnemidocarpa effracta Monniot, 1978 | Cnemidocarpa effracta | 19 |
| Botrulloides eligulatum Beniaminson, 1975 | Botryllus tuberatus | 75097 |
| Botrylloides eligulatum Beniaminson, 1975 | Botryllus tuberatus | 19 |
| Botryllocarpa elongata Kott, 1990 | Botryllocarpa elongata | 19 |
| Styela elsa Hartmeyer, 1906 | Cnemidocarpa clara | 19 |
| Bathyoncus enderbyanus Michaelson, 1904 | Bathyoncus enderbyanus | 3477 |
| Cnemidocarpa eposi Monniot & Monniot, 1994 | Cnemidocarpa eposi | 19 |
| Eusynstyela errans Hartmeyer, 1909-1911 | Eusynstyela errans | 19 |
| Polycarpa errans Hartmeyer, 1909-1911 | Polycarpa errans | 19 |
| Styela esther Hartmeyer, 1906 | Cnemidocarpa irene | 19 |
| Styela eurygaster Millar, 1977 | Styela eurygaster | 3657 |
| Polyzoa exigua Kott, 1990 | Polyzoa exigua | 19 |
| Metandrocarpa fascicularis Millar, 1962 | Metandrocarpa fascicularis | 1756 |
| Dicarpa fibrata Monniot & Monniot, 1997 | Dicarpa fibrata | 19 |
| Glandula fibrosa Stimpson, 1852 | Polycarpa fibrosa | 19 |
| Botryllus firmus Monniot & Monniot, 1996 | Botryllus firmus | 19 |
| Cnemidocarpa fissa Kott, 1985 | Cnemidocarpa fissa | 19 |
| Polycarpa flava Kott, 1985 | Polycarpa flava | 19 |
| Styela floccosa Sluiter, 1904 | Cnemidocarpa floccosa | 1134 |
| Polyandrocarpa floridana Van Name, 1921 | Polyandrocarpa floridana | 19 |
| Polycarpa fungiformis Herdman, 1899 | Polycarpa fungiformis | 19 |
| Styela gagetyleri Young & Vazquez, 1997 | Styela gagetyleri | 19 |
| Styela gelatinosa Traustedt, 1886 | Styela gelatinosa | 19 |
| Botryllus giganteum Pérès, 1949 | Botryllus giganteum | 1756 |
| Polyandrocarpa glandulosa Monniot, 1987 | Polyandrocarpa glandulosa | 19 |
| Styela glans Herdman, 1881 | Styela glans | 19 |
| Botryllus gracilis Michaelsen, 1927 | Botryllus gracilis | 19 |
| Polycarpa gracilis Heller, 1877 | Polycarpa gracilis | 19 |
| Styela gracilocarpa Millar, 1982 | Styela gracilocarpa | 3651 |
| Polycarpa gradata Monniot, 2002 | Polycarpa gradata | 19 |
| Styela grahami Sluiter, 1912 | Styela grahami | 19 |
| Eusynstyela grandis Kott, 1985 | Eusynstyela grandis | 19 |
| Styela grandis Herdman, 1881 | Cnemidocarpa verrucosa | 3477 |
| Polyandrocarpa griffithsi Monniot, 2001 | Polyandrocarpa griffithsi | 19 |
| Podostyela grynfeltti Harant & Vernier, 1933 | Podostyela grynfeltti | 19 |
| Chorizocarpa guttata Michaelsen, 1904 | Chorizocarpa guttata | 19 |
| Styela hadalis Sanamyan & Sanamyan, 2006 | Styela hadalis | 3382 |
| Tibitin halimedae Monniot, 1983 | Tibitin halimedae | 19 |
| Cnemidocarpa hartmeyeri Michaelsen, 1918 | Cnemidocarpa hartmeyeri | 19 |
| Eusynstyela hartmeyeri Michaelsen, 1904 | Eusynstyela hartmeyeri | 19 |
| Polycarpa hartmeyeri Michaelsen, 1927 | Polycarpa hartmeyeri | 19 |
| Cnemidocarpa hemprichi Hartmeyer, 1916 | Cnemidocarpa hemprichi | 19 |
| Bathyoncus herdmani Michaelsen, 1904 | Bathyoncus herdmani | 19 |
| Protostyela heterobranchia Millar, 1954 | Protostyela heterobranchia | 19 |
| Botryllus humilis Monniot, 1988 | Botrylloides anceps | 19 |
| Styela humilis Heller, 1878 | Asterocarpa humilis | 1134 |
| Polycarpa indiana Monniot & Monniot, 1985 | Polycarpa indiana | 19 |
| Metandrocarpa indica Kott, 1972 | Metandrocarpa indica | 19 |
| Polycarpa inhacae Monniot & Monniot, 1976 | Polycarpa inhacae | 3477 |
| Polyzoa insularis Millar, 1967 | Polyzoa insularis | 1756 |
| Cnemidocarpa intestinata Kott, 1985 | Cnemidocarpa intestinata | 19 |
| Polycarpa intonata Kott, 1985 | Polycarpa intonata | 19 |
| Styela irene Hartmeyer, 1906 | Cnemidocarpa irene | 1733 |
| Botrylloides israeliense Brunetti, 2009 | Botrylloides israeliense | 85347 |
| Polycarpa itera Monniot & Monniot, 1977 | Polycarpa itera | 19 |
| Cnemidocarpa jacens Monniot & Monniot, 2003 | Cnemidocarpa jacens | 2258 |
| Pandocia japonica Michaelsen, 1911 | Polycarpa cryptocarpa | 19 |
| Symplegma japonica Tokioka, 1962 | Symplegma japonica | 19 |
| Cnemidocarpa javensis Millar, 1975 | Cnemidocarpa javensis | 19 |
| Polycarpa kapala Kott, 1985 | Polycarpa kapala | 19 |
| Polycarpa kornogi Glémarec & Monniot, 1966 | Polycarpa kornogi | 3477 |
| Styela kottae Monniot & Monniot, 1992 | Styela kottae | 19 |
| Dendrodoa kuekenthali Hartmeyer, 1899 | Dendrodoa pulchella | 3705 |
| Amphicarpa laboutei Monniot, 1988 | Stolonica laboutei | 7454 |
| Styela lactea Herdman, 1881 | Cnemidocarpa verrucosa | 3477 |
| Stolonica laevis Monniot, 2002 | Stolonica laevis | 19 |
| Bathyoncus lanatus Monniot & Monniot, 1991 | Bathyoncus lanatus | 19 |
| Cnemidocarpa lapidosa Herdman, 1906 | Cnemidocarpa lapidosa | 19 |
| Goodsiria lapidosa Herdman, 1891 | Polyandrocarpa lapidosa | 1134 |
| Dicarpa lata Monniot & Monniot, 1976 | Dicarpa lata | 1662 |
| Gynandrocarpa latericius Sluiter, 1904 | Eusynstyela latericius | 1661 |
| Bathystyeloides laubieri Monniot & Monniot, 1974 | Bathystyeloides laubieri | 19 |
| Stolonica limbata Monniot & Monniot, 1996 | Stolonica limbata | 19 |
| Seriocarpa littoralis Millar, 1975 | Seriocarpa littoralis | 1661 |
| Styela lobata Kott, 1952 | Cnemidocarpa lobata | 1134 |
| Alloeocarpa loculosa Monniot, 1975 | Alloeocarpa loculosa | 19 |
| Styela loculosa Monniot & Monniot, 1968 | Styela loculosa | 19 |
| Styela longata Kott, 1954 | Cnemidocarpa longata | 1134 |
| Protostyela longicauda Monniot, Vazquez & White, 1995 | Protostyela longicauda | 19 |
| Styela longiducta Monniot & Monniot, 1985 | Styela longiducta | 19 |
| Polycarpa longiformis Tokioka, 1952 | Polycarpa longiformis | 19 |
| Polycarpa longitubis Monniot, Monniot & Leung Tack, 1987 | Polycarpa longitubis | 2673 |
| Polycarpa lucilla Kott, 1985 | Polycarpa hartmeyeri | 19 |
| Polycarpa macra Monniot & Monniot, 1991 | Polycarpa macra | 19 |
| Styela macrenteron Ritter, 1913 | Styela macrenteron | 3477 |
| Styela macrogastra Oka, 1935 | Cnemidocarpa clara | 19 |
| Polycarpa maculata Hartmeyer, 1906 | Polycarpa maculata | 19 |
| Polycarpa madagascariensis Hartmeyer, 1906 | Polycarpa madagascariensis | 19 |
| Cnemidocarpa madascariensis Hartmeyer, 1916 | Cnemidocarpa hemprichi | 1733 |
| Cnemidocarpa madascariensis var. regalis Michaelsen, 1922 | Cnemidocarpa hemprichi | 3477 |
| Styela magalhaensis Michaelsen, 1898 | Styela magalhaensis | 19 |
| Botrylloides magnicoecum Hartmeyer, 1912 | Botryllus anceps | 19 |
| Botryllus magnicoecus Hartmeyer, 1912 | Botryllus magnicoecus | 1756 |
| Bathystyeloides magnus Sanamyan & Sanamyan, 1999 | Bathystyeloides magnus | 1662 |
| Styela mallei Monniot, 1979 | Styela mallei | 19 |
| Polycarpa mamillaris Michaelsen, 1912 | Polycarpa mamillaris | 19 |
| Metandrocarpa manina Monniot & Monniot, 1987 | Metandrocarpa manina | 19 |
| Tibitin manu Monniot & Monniot, 1987 | Tibitin manu | 19 |
| Cnemidocarpa margaritifera Hartmeyer, 1918 | Cnemidocarpa margaritifera | 19 |
| Styela marquesana Michaelson, 1918 | Styela marquesana | 3477 |
| Polycarpa maruhi Monniot & Monniot, 1987 | Polycarpa maruhi | 19 |
| Styela materna Monniot & Monniot, 1983 | Styela materna | 19 |
| Botrylloides meandrinum Sluiter, | Botrylloides meandrinum | 3477 |
| Botryllus meandrius Monniot et al, 2001 | Botryllus meandrius | 1756 |
| Botrylloides mediterraneum Daumezon, 1909 | Botrylloides mediterraneum | 3694 |
| Oligocarpa megalorchis Hartmeyer, 1911 | Oligocarpa megalorchis | 19 |
| Polycarpa melanosiphonica Tokioka, 1967 | Polycarpa melanosiphonica | 3677 |
| Amphicarpa meridiana Kott, 1985 | Stolonica australis | 19 |
| Styela meteoris Monniot, 2002 | Styela meteoris | 19 |
| Bathystyeloides mexicanus Monniot & Monniot, 1987 | Bathystyeloides mexicanus | 19 |
| Amphicarpa michaelseni Brewin, 1956 | Stolonica michaelseni | 3477 |
| Metandrocarpa michaelseni Ritter & Forsyth, 1917 | Metandrocarpa michaelseni | 19 |
| Synstyela michaelseni Sluiter, 1900 | Chorizocarpa michaelseni | 1134 |
| Dendrodoa microstigma Redikorzev, 1916 | Dendrodoa lineata | 19 |
| Styela milleri Ritter, 1907 | Styela milleri | 19 |
| Styela minima Monniot, 1971 | Styela minima | 7445 |
| Metandrocarpa miniscula Kott, 1985 | Metandrocarpa miniscula | 19 |
| Polyzoa minor Monniot, 1970 | Polyzoa minor | 19 |
| Polycarpa minuta Herdman, 1881 | Polycarpa minuta | 19 |
| Bathyoncus mirabilis Herdman, 1882 | Bathyoncus mirabilis | 19 |
| Bathystyeloides miriducta Monniot & Monniot, 1991 | Bathystyeloides miriducta | 19 |
| Polyandrocarpa misakiensis Tokioka, 1953 | Polyandrocarpa misakiensis | 19 |
| Dextrocarpa misanthropos Monniot, 1978 | Dextrocarpa misanthropos | 19 |
| Gynandrocarpa misanthropos Monniot, 1978 | Dextrocarpa misanthropos | 19 |
| Polycarpa moebii Michaelsen, 1905 | Polycarpa viridis | 3477 |
| Polycarpa molguloides Herdman, 1882 | Polycarpa molguloides | 19 |
| Glandula mollis Stimpson, 1852 | Cnemidocarpa mollis | 19 |
| Cnemidocarpa mollispina Ärnbäck, 1922 | Cnemidocarpa mollispina | 19 |
| Botryllus mortenseni Millar, 1964 | Botryllus mortensi | 1756 |
| Botryllus mortensi Millar, 1964 | Botryllus mortensi | 19 |
| Polycarpa muelleri Brunetti, 2007 | Polycarpa muelleri | 3477 |
| Styela multicarpa Barros & Rocha, 2021 | Styela multicarpa | 3477 |
| Styela multitentaculata Sanamyan & Sanamyan, 2006 | Styela multitentaculata | 3382 |
| Stolonica multitestis Monniot, 2001 | Stolonica multitestis | 19 |
| Azygocarpa mutuensis Oka, 1932 | Cnemidocarpa clara | 19 |
| Dicarpa mysogyna Monniot & Monniot, 1982 | Dicarpa mysogyna | 19 |
| Cynthia mytiligera Savigny, 1816 | Polycarpa mytiligera | 1733 |
| Polycarpa natalensis Sluiter, 1898 | Polycarpa natalensis | 1756 |
| Botrylloides niger Herdman, 1886 | Botrylloides nigrum | 19 |
| Polycarpa nigerrima Monniot, & Monniot, 2001 | Polycarpa nigerrima | 19 |
| Polycarpa nigricans Heller, 1878 | Polycarpa nigricans | 19 |
| Polyandrocarpa nivosa Sluiter, 1898 | Polyandrocarpa nivosa | 19 |
| Polyzoa nodosa Kott, 1990 | Polyzoa nodosa | 19 |
| Amphicarpa nodula Kott, 1985 | Stolonica nodula | 19 |
| Styela nordenskjoldi Michaelsen, 1898 | Cnemidocarpa nordenskjoldi | 3477 |
| Polycarpa nota Kott, 1985 | Polycarpa nota | 19 |
| Styela oblonga Herdman, 1881 | Styela oblonga | 19 |
| Polycarpa obscura Heller, 1878 | Polycarpa obscura | 19 |
| Polycarpa obtecta Traustedt, 1883 | Polycarpa obtecta | 19 |
| Oculinaria occultare Monniot, 1991 | Oculinaria occultare | 3477 |
| Symplegma oceania Tokioka, 1961 | Symplegma stuhlmanni | 19 |
| Polycarpa offa Monniot & Monniot, 1988 | Polycarpa offa | 19 |
| Polyandrocarpa oligocarpa Millar, 1970 | Polyandrocarpa oligocarpa | 7489 |
| Styela oligocarpa Sluiter, 1885 | Cnemidocarpa oligocarpa | 1134 |
| Styela olitoria Sluiter, 1890 | Polycarpa olitoria | 1134 |
| Polyzoa opuntia Lesson, 1830 | Polyzoa opuntia | 19 |
| Styela ordinaria Monniot & Monniot, 1985 | Styela ordinaria | 19 |
| Botryllus ovalis Monniot, 1988 | Botryllus ovalis | 19 |
| Polycarpa ovata Pizon, 1908 | Polycarpa ovata | 19 |
| Dicarpa pacifica Millar, 1964 | Dicarpa pacifica | 19 |
| Hemistyela pacifica Sanamyan & Sanamyan, 2006 | Hemistyela pacifica | 3382 |
| Distomus pacificus Monniot & Monniot, 1991 | Distomus pacificus | 3674 |
| Styela paessleri Michaelsen, 1898 | Styela paessleri | 19 |
| Styela panamensis Barros & Rocha, 2021 | Styela panamensis | 3477 |
| Styela papillata Sluiter, 1885 | Polycarpa papillata | 1661 |
| Polycarpa papyra Kott, 1985 | Polycarpa papyra | 19 |
| Polycarpa pedata Herdman, 1881 | Cnemidocarpa pedata | 1661 |
| Polycarpa pedunculata Heller, 1878 | Polycarpa pedunculata | 19 |
| Polycarpa pentarhiza Monniot, 1965 | Polycarpa pentarhiza | 19 |
| Styela personata Herdman, 1899 | Cnemidocarpa personata | 1134 |
| Botrylloides perspicuus Herdman, 1886 | Botryllus perspicuum | 1134 |
| Polycarpa perstellata Monniot & Monniot, 2003 | Polycarpa perstellata | 2258 |
| Cnemidocarpa peruviana Millar, 1970 | Cnemidocarpa peruviana | 7489 |
| Styela pfefferi Michaelsen, 1898 | Styela pfefferi | 19 |
| Eusynstyela phiala Monniot, 1991 | Eusynstyela phiala | 3477 |
| Polycarpa picteti Pizon, 1909 | Polycarpa pigmentata | 3477 |
| Styela pigmentata Herdman, 1906 | Polycarpa pigmentata | 1661 |
| Monoandrocarpa plana Kott, 1972 | Monandrocarpa plana | 1134 |
| Polycarpa plantei Monniot, 2002 | Polycarpa plantei | 19 |
| Cnemidocarpa platybranchia Millar, 1955 | Cnemidocarpa platybranchia | 19 |
| Polycarpa plenovata Kott, 1985 | Polycarpa plenovata | 19 |
| Ascidia plicata Le Sueur, 1823 | Styela plicata | 19 |
| Styela polypes Monniot, Monniot & Millar, 1976 | Styela polypes | 19 |
| Polyandrocarpa polypora Monniot, & Monniot, 2001 | Polyandrocarpa polypora | 19 |
| Polycarpa porculus Monniot & Monniot, 1979 | Polycarpa porculus | 19 |
| Polycarpa pori Monniot, 2002 | Polycarpa pori | 19 |
| Cnemidocarpa posthuma Hartmeyer, 1927 | Cnemidocarpa posthuma | 19 |
| Botryllus primigenus Oka, 1928 | Botryllus primigenus | 19 |
| Tibitin probatus Monniot & Monniot, 1987 | Tibitin probatus | 3477 |
| Styela procera Sluiter, 1885 | Polycarpa procera | 1134 |
| Polycarpa producta Monniot & Monniot, 2003 | Polycarpa producta | 2258 |
| Botryllus promiscuus Okuyama & Saito, 2002 | Botryllus promiscuus | 19 |
| Cnemidocarpa psammophora Millar, 1962 | Cnemidocarpa psammophora | 1756 |
| Polycarpa pseudoalbatrossi Monniot & Monniot, 1968 | Polycarpa pseudoalbatrossi | 19 |
| Styela psoliformis Monniot & Monniot, 1989 | Styela psoliformis | 19 |
| Botryllus puniceus Saito & Nagasawa, 2003 | Botryllus puniceus | 19 |
| Styela pupa Heller, | Styela pupa | 3477 |
| Psammobothrus purpureus Oka, 1932 | Botryllus anceps | 19 |
| Psammobotrus purpureus Oka, 1932 | Botryllus magnicoecus | 1134 |
| Polycarpa pusilla Herdman, 1884 | Polycarpa pusilla | 2576 |
| Cnemidocarpa radicata Millar, 1962 | Cnemidocarpa radicata | 1756 |
| Styela radicata Millar, 1962 | Styela radicata | 3550 |
| Styela radicosa Herdman, 1882 | Cnemidocarpa radicosa | 1134 |
| Cnemidocarpa ramosa Nishikawa, 1991 | Cnemidocarpa ramosa | 19 |
| Cnemidocarpa recta Monniot, 1991 | Cnemidocarpa recta | 3477 |
| Styela rectangularis Kott, 1952 | Styela canopus | 19 |
| Cnemidocarpa rectofissura Millar, 1982 | Cnemidocarpa rectofissura | 3651 |
| Metandrocarpa reducta Monniot, 1988 | Metandrocarpa reducta | 19 |
| Styela reducta Sluiter, 1904 | Stolonica reducta | 1134 |
| Styela reniformis Sluiter, 1904 | Polycarpa reniformis | 1134 |
| Chorizocormus reticulatus Herdman, 1886 | Chorizocormus reticulatus | 3477 |
| Polycarpa reviviscens Monniot, & Monniot, 2001 | Polycarpa reviviscens | 19 |
| Seriocarpa rhizoides Diehl, 1969 | Seriocarpa rhizoides | 19 |
| Polycarpa richeri Monniot, 1987 | Polycarpa richeri | 19 |
| Polycarpa rigida Herdman, 1881 | Polycarpa rigida | 19 |
| Polycarpa rima Monniot & Monniot, 1996 | Polycarpa rima | 19 |
| Cnemidocarpa robinsoni Hartmeyer, 1916 | Cnemidocarpa robinsoni | 19 |
| Polyandrocarpa robusta Sluiter, 1915 | Polyandrocarpa robusta | 19 |
| Polycarpa rockallensis Millar, 1982 | Polycarpa rockallensis | 3477 |
| Polyandrocarpa rollandi Tokioka, 1961 | Polyandrocarpa rollandi | 19 |
| Symplegma rubra Monniot, 1972 | Symplegma rubra | 19 |
| Polyandrocarpa sabanillae Van Name, 1921 | Polyandrocarpa sabanillae | 19 |
| Cnemidocarpa sabulosa Glémarec & Monniot, 1966 | Cnemidocarpa sabulosa | 3477 |
| Polycarpa sabulosa Heller, 1877 | Polycarpa sabulosa | 3477 |
| Botrylloides saccus Kott, 2003 | Botryllus saccus | 1134 |
| Polyandrocarpa sagamiensis Tokioka, 1953 | Polyandrocarpa sagamiensis | 19 |
| Styela salebrosa Beniaminson, 1971 | Styela coriacea | 19 |
| Botryllus scalaris Saito & Mukai, 1981 | Botryllus scalaris | 19 |
| Amphicarpa schauinslandi Michaelsen, 1922 | Stolonica schauinslandi | 3477 |
| Alcyonium schlosseri Pallas, 1766 | Botryllus schlosseri | 1134 |
| Styela schmitti Van Name, 1945 | Styela schmitti | 19 |
| Cnemidocarpa schumacheri Monniot, 2002 | Cnemidocarpa schumacheri | 19 |
| Polycarpa scuba Monniot, 1971 | Polycarpa scuba | 3477 |
| Cnemidocarpa sericata Herdman, 1988 | Cnemidocarpa sericata | 1756 |
| Styela sericata Herdman, 1888 | Styela sericata | 19 |
| Cnemidocarpa sericator Kott, 1971 | Cnemidocarpa sericator | 3477 |
| Pandocia seychellensis Michaelsen, 1912 | Polycarpa mytiligera | 1733 |
| Polycarpa seychellensis Monniot & Monniot, 1976 | Polycarpa mytiligera | 1733 |
| Polycarpa seychellensis Michaelsen, 1912 | Polycarpa seychellensis | 3477 |
| Styela sigma Hartmeyer, 1906 | Styela sigma | 2258 |
| Polycarpa sigmilineata Millar, 1975 | Polycarpa decipiens | 1456 |
| Styela similis Monniot, 1970 | Styela similis | 19 |
| Botrylloides simodensis Saito & Watanabe, 1981 | Botryllus simodensis | 19 |
| Botryllus simodensis unspecified | Botryllus simodensis | 19 |
| Dicarpa simplex Millar, 1955 | Dicarpa simplex | 19 |
| Polycarpa simplicigona Millar, 1975 | Monandrocarpa simplicigona | 19 |
| Polyandrocarpa simulans Kott, 1972 | Polyandrocarpa simulans | 19 |
| Oligocarpa skoogi Michaelsen, 1923 | Oligocarpa skoogi | 1756 |
| Styela sobria Sluiter, 1904 | Polycarpa sobria | 1134 |
| Stolonica socialis Hartmeyer, 1903 | Stolonica socialis | 19 |
| Dextrocarpa solitaris Millar, 1955 | Gynandrocarpa solitaris | 19 |
| Gynandrocarpa solitaris Millar, 1955 | Gynandrocarpa solitaris | 19 |
| Polycarpa sourieri Pérès, 1949 | Polycarpa sourieri | 2673 |
| Polyandrocarpa sparsa Kott, 1985 | Polyandrocarpa sparsa | 19 |
| Dicarpa spinifera Monniot & Monniot, 1976 | Dicarpa spinifera | 19 |
| Polycarpa spongiabilis Traustedt, 1883 | Polycarpa spongiabilis | 19 |
| Cnemidocarpa squamata Lützen, 1970 | Cnemidocarpa squamata | 19 |
| Styela squamosa Herman, 1881 | Styela squamosa | 19 |
| Metandrocarpa sterreri Monniot, 1972 | Metandrocarpa sterreri | 19 |
| Botryllus stewartensis Brewin, 1958 | Botryllus stewartensis | 19 |
| Cnemidocarpa stewartensis Michelsen, 1922 | Cnemidocarpa stewartensis | 3477 |
| Theodorella stewartensis Michaelsen, 1922 | Theodorella stewartensis | 3477 |
| Polycarpa stirpes Kott, 1985 | Polycarpa stirpes | 19 |
| Monandrocarpa stolonifera Monniot, 1970 | Monandrocarpa stolonifera | 19 |
| Styela stolonifera Herdman, 1899 | Cnemidocarpa stolonifera | 1134 |
| Stolonica styeliformis Van Name, 1918 | Stolonica styeliformis | 1134 |
| Polycarpa suesana Michaelsen, 1919 | Polycarpa suesana | 19 |
| Styela suluensis Monniot & Monniot, 2003 | Styela suluensis | 2258 |
| Polycarpa takarazima Tokioka, 1953 | Polycarpa takarazima | 3676 |
| Styela talpina Monniot, 1978 | Styela talpina | 19 |
| Bathyoncus tantulus Monniot & Monniot, 1991 | Bathyoncus tantulus | 19 |
| Polyandrocarpa tarona Monniot & Monniot, 1987 | Polyandrocarpa tarona | 19 |
| Metandrocarpa taylori Huntsman, 1912 | Metandrocarpa taylori | 19 |
| Polycarpa tenera Lacaze-Duthiers & Delage, 1892 | Polycarpa tenera | 3477 |
| Styela tenuibranchia Monniot, Monniot & Millar, 1976 | Styela tenuibranchia | 19 |
| Symplegma teruakii Kott, 2004 | Symplegma teruakii | 19 |
| Styela tesseris Lambert, 1993 | Styela tesseris | 1732 |
| Styela thalassae Monniot, 1969 | Styela thalassae | 3477 |
| Styela theeli Änrbäck, 1921 | Styela theeli | 19 |
| Styela thelyphanes Slutier, 1904 | Polycarpa thelyphanes | 1134 |
| Metandrocarpa thilenii Michaelsen, 1922 | Metandrocarpa thilenii | 19 |
| Styela tinaktae Van Name, 1918 | Cnemidocarpa tinaktae | 7487 |
| Polyandrocarpa tincta Van Name, 1902 | Eusynstyela tincta | 19 |
| Ascidia tinctor Quoy & Gaimard, 1834 | Polycarpa tinctor | 1134 |
| Polycarpa tinctorella Kott, 1985 | Polycarpa tinctorella | 19 |
| Polycarpa tokiokai Monniot & Monniot, 1996 | Polycarpa tokiokai | 19 |
| Styela tokiokai Nishikawa, 1991 | Styela tokiokai | 19 |
| Seriocarpa tongae Monniot, & Monniot, 2001 | Seriocarpa tongae | 19 |
| Theodorella torus Michaelsen, 1922 | Theodorella torus | 3477 |
| Polyzoa translucida Ritter & Forsyth, 1917 | Polyzoa translucida | 19 |
| Eusynstyela transversalis Tokioka, 1963 | Eusynstyela transversalis | 1601 |
| Tibitin transversalis Tokioka, 1955 | Tibitin transversalis | 19 |
| Cnemidocarpa tribranchiata Kott, 1992 | Cnemidocarpa tribranchiata | 19 |
| Polyandrocarpa triggiensis Kott, 1952 | Polyandrocarpa triggiensis | 19 |
| Cnemidocarpa tripartita Kott, 1985 | Cnemidocarpa tripartita | 19 |
| Polycarpa triruga Monniot & Monniot, 2003 | Polycarpa triruga | 2258 |
| Metandrocarpa tritonis Michaelsen, 1904 | Monandrocarpa tritonis | 1756 |
| Monandrocarpa tritonis Michaelsen, 1904 | Monandrocarpa tritonis | 19 |
| Stolonica truncata Kott, 1972 | Stolonica truncata | 19 |
| Styela truncata Ritter, 1901 | Styela truncata | 19 |
| Botryllus tuberatus Ritter & Forsyth, 1917 | Botryllus tuberatus | 19 |
| Polycarpa tumida Heller, 1878 | Polycarpa tumida | 19 |
| Polycarpa twynami Herdman, 1906 | Polycarpa twynami | 19 |
| Botrylloides tyreum Herdman, 1886 | Botrylloides leachii | 19 |
| Gynandrocarpa unilateralis Michaelsen, | Gynandrocarpa unilateralis | 3477 |
| Cnemidocarpa univesica Monniot, Dettai, Eleaume, Cruaud & Ameziane, 2011 | Cnemidocarpa univesica | 87647 |
| Cnemidocarpa valborgi Hartmeyer, 1919 | Cnemidocarpa irene | 19 |
| Stolonica variata Monniot, 1988 | Stolonica variata | 19 |
| Distomus variolosus Gaertner, 1774 | Distomus variolosus | 19 |
| Metandrocarpa vedai Watanabe & Tokioka, 1972 | Metandrocarpa vedai | 7750 |
| Stolonica vermiculata Kott, 2005 | Stolonica vermiculata | 1134 |
| Stolonica vesicularis Van Name, 1918 | Stolonica vesicularis | 19 |
| Polyzoa vesiculiphora Tokioka, 1951 | Polyzoa vesiculiphora | 19 |
| Cnemidocarpa victoriae Monniot & Monniot, 1983 | Cnemidocarpa victoriae | 19 |
| Monobotryllus violacea Oka, 1915 | Polyzoa violacea | 1134 |
| Polyandrocarpa violacea Sluiter, 1905 | Polyandrocarpa violacea | 3477 |
| Botrylloides violaceus Oka, 1927 | Botrylloides violaceus | 1745 |
| Botryllus violaceus Milne-Edwards, 1841 | Botryllus schlosseri | 19 |
| Symplegma viride Herdman, 1886 | Symplegma viride | 19 |
| Polycarpa viridis Herdman, 1880 | Polycarpa viridis | 19 |
| Polyandrocarpa watsonia Kott, 1985 | Polyandrocarpa watsonia | 19 |
| Polycarpa willisi Herdman, 1906 | Polycarpa willisi | 19 |
| Styela yakutatensis Ritter, 1901 | Styela yakutatensis | 19 |
| Symplegma zebra Monniot, 2002 | Symplegma zebra | 19 |
| Cnemidocarpa zenkevitchi Vinogradova, 1958 | Cnemidocarpa zenkevitchi | 19 |
| Polycarpa zeteta Millar, 1982 | Polycarpa zeteta | 1662 |