Agnesia glaciata Michaelsen, 1898 accepted as Agnezia glaciata Michaelsen, 1898 (additional source)
Agnezia glaciata Michaelsen, 1898 (basis of record)
Agnezia septentrionalis (Huntsman, 1912) (basis of record)
Alloeocarpa bacca Ärnbäck, 1929 (additional source)
Alloeocarpa bridgesi Michaelsen, 1900 (additional source)
Alloeocarpa incrustans (Herdman, 1886) (additional source)
Amaroucium arenatum Van Name, 1945 accepted as Aplidium arenatum (Van Name, 1945) (original description)
Amaroucium laevigatum Herdman, 1886 accepted as Aplidium fuegiense (Cunningham, 1871) (source of synonymy)
Amaroucium propinquum Van Name, 1945 accepted as Aplidium propinquum (Van Name, 1945) (original description)
Aplidiopsis pannosum (Ritter, 1899) (basis of record)
Aplidium arenatum (Van Name, 1945) (basis of record)
Aplidium bermudae (Van Name, 1902) (additional source)
Aplidium californicum (Ritter & Forsyth, 1917) (basis of record)
Aplidium constellatum (Verrill, 1871) (basis of record)
Aplidium effrenatum (Herdman, 1886) (basis of record)
Aplidium exile (Van Name, 1902) (basis of record)
Aplidium funginum (Sluiter, 1898) (basis of record)
Aplidium laevigatum (Herdman, 1886) accepted as Aplidium fuegiense (Cunningham, 1871) (source of synonymy)
Aplidium lobatum Savigny, 1816 (additional source)
Aplidium pellucidum (Leidy, 1855) (additional source)
Aplidium propinquum (Van Name, 1945) (basis of record)
Aplidium spauldingi (Ritter, 1907) (basis of record)
Aplidium stellatum (Verrill, 1871) (basis of record)
Archidistoma aggregatum Garstang, 1891 (additional source)
Ascidia callosa Stimpson, 1852 (additional source)
Ascidia ceratodes (Huntsman, 1912) (basis of record)
Ascidia clementea Ritter, 1907 (additional source)
Ascidia curvata (Traustedt, 1882) (basis of record)
Ascidia dijmphniana (Traustedt, 1886) (additional source)
Ascidia meridionalis Herdman, 1880 (additional source)
Ascidia obliqua Alder, 1863 (additional source)
Ascidia paratropa (Huntsman, 1912) (basis of record)
Ascidia prunum Müller, 1776 (additional source)
Ascidia translucida Sluiter, 1890 (additional source)
Ascidia unalaskensis (Ritter, 1913) (basis of record)
Ascidia vermiformis (Ritter, 1913) (basis of record)
Bathypera ovoida (Ritter, 1907) (basis of record)
Bathypera splendens Michaelsen, 1904 (additional source)
Benthascidia michaelseni Ritter, 1907 (additional source)
Boltenia echinata (Linnaeus, 1767) (additional source)
Boltenia ovifera (Linnaeus, 1767) (additional source)
Boltenia villosa (Stimpson, 1864) (basis of record)
Bostrichobranchus pilularis (Verrill, 1871) (additional source)
Botrylloides aureum Sars, 1851 accepted as Botrylloides aureus Sars, 1851 (additional source)
Botrylloides diegense Ritter & Forsyth, 1917 accepted as Botrylloides diegensis Ritter & Forsyth, 1917 (additional source)
Botrylloides nigrum Herdman, 1886 accepted as Botrylloides niger Herdman, 1886 (additional source)
Botryllus planus (Van Name, 1902) (additional source)
Botryllus primigenus Oka, 1928 (additional source)
Caenagnesia bocki Ärnbäck-Christie-Linde, 1938 (additional source)
Chelyosoma columbianum Huntsman, 1912 (additional source)
Chelyosoma macleayanum Broderip & Sowerby, 1830 (additional source)
Chelyosoma productum Stimpson, 1864 (additional source)
Ciona gelatinosa Bonnevie, 1896 (additional source)
Ciona intestinalis (Linnaeus, 1767) (additional source)
Ciona longissima Hartmeyer, 1899 (additional source)
Clavelina concrescens Hartmeyer, 1924 (additional source)
Clavelina fasciculata Van Name, 1945 (original description)
Clavelina huntsmani Van Name, 1931 (additional source)
Clavelina oblonga Herdman, 1880 (additional source)
Clavelina picta (Verrill, 1900) (basis of record)
Cnemidocarpa annectens (Hartmeyer, 1921) (additional source)
Cnemidocarpa finmarkiensis (Kiaer, 1893) (additional source)
Cnemidocarpa mollis (Stimpson, 1852) (additional source)
Cnemidocarpa mortenseni (Hartmeyer, 1912) (additional source)
Cnemidocarpa ohlini (Michaelsen, 1898) (basis of record)
Cnemidocarpa verrucosa (Lesson, 1830) (additional source)
Coelocormidae Herdman, 1886 accepted as Didemnidae Giard, 1872 (additional source)
Coelocormus huxleyi Herdman, 1886 (additional source)
Corella borealis Traustedt, 1886 (additional source)
Corella eumyota Traustedt, 1882 (additional source)
Corella minuta Traustedt, 1882 (additional source)
Corelloides molle Oka, 1926 (additional source)
Corellopsis pedunculata Hartmeyer, 1903 (additional source)
Cystodytes lobatus (Ritter, 1900) (basis of record)
Dendrodoa aggregata Müller, 1776 (additional source)
Dendrodoa carnea (Agassiz, 1850) (additional source)
Dendrodoa grossularia (Van Beneden, 1846) (additional source)
Dendrodoa lineata (Traustedt, 1880) (additional source)
Dendrodoa pulchella (Rathke, 1806) (additional source)
Diazona geayi Caullery, 1914 (additional source)
Diazona gigantea (Sluiter, 1919) accepted as Stomozoa gigantea (Van Name, 1921) (basis of record)
Didemnum albidum (Verrill, 1871) (additional source)
Didemnum candidum Savigny, 1816 (additional source)
Didemnum carnulentum Ritter & Forsyth, 1917 (additional source)
Didemnum chilense Ärnbäck, 1929 (additional source)
Didemnum santaelenae Van Name, 1945 (original description)
Didemnum studeri Hartmeyer, 1911 (additional source)
Didemnum tenue (Herdman, 1886) (additional source)
Didemnum vanderhorsti Van Name, 1924 (additional source)
Diplosoma macdonaldi Herdman, 1886 accepted as Diplosoma listerianum (Milne Edwards, 1841) (additional source)
Distaplia bermudensis Van Name, 1902 (additional source)
Distaplia clavata (Sars, 1851) (additional source)
Distaplia cylindrica (Lesson, 1830) (additional source)
Ecteinascidia conklini Berrill, 1932 (additional source)
Ecteinascidia turbinata Herdman, 1880 (additional source)
Eudistoma capsulatum (Van Name, 1902) (basis of record)
Eudistoma carolinense Van Name, 1945 (original description)
Eudistoma clarum (Van Name, 1902) (additional source)
Eudistoma diaphanes Ritter & Forsyth, 1917 (additional source)
Eudistoma hepaticum (Van Name, 1921) (basis of record)

Brazil for Polyandrocarpa pilella (Herdman, 1881) 
United States part of the Gulf of Mexico for Botryllus schlosseri (Pallas, 1766)  (origin: alien)
United States part of the Gulf of Mexico for Styela plicata (Lesueur, 1823)  (origin: alien)
United States part of the North Atlantic Ocean for Bostrichobranchus pilularis (Verrill, 1871)  (origin: alien)
United States part of the North Atlantic Ocean for Styela plicata (Lesueur, 1823)  (origin: alien)