URMO Taxon list
Harrimania borealis Okuda & Yamada, 1955
Harrimania kupfferi (von Willemoes-Suhm, 1871)
Harrimania maculosa Ritter, 1900
Harrimania planktophilus Cameron, 2002
Horstia kincaidi Deland, Cameron, Rao, Ritter & Bullock, 2010
Mesoglossus bournei Menon, 1904
Mesoglossus caraibicus van der Horst, 1924
Mesoglossus gurneyi Robinson, 1927
Mesoglossus intermedius Deland, Cameron, Rao, Ritter & Bullock, 2010
Mesoglossus macginitiei Deland, Cameron, Rao, Ritter & Bullock, 2010
Mesoglossus pygmaeus Hinrichs & Jacobi, 1938
Protoglossus graveolens Giray & King, 1996
Protoglossus koehleri Caullery & Mesnil, 1900
Protoglossus mackiei Deland, Cameron, Rao, Ritter & Bullock, 2010
Ritteria ambigua Deland, Cameron, Rao, Ritter & Bullock, 2010
Saccoglossus apatensis Thomas, 1955
Saccoglossus aulakoeis Thomas, 1968
Saccoglossus borealis Okuda & Yamada, 1955 accepted as Harrimania borealis Okuda & Yamada, 1955
Saccoglossus bournei Menon, 1904 accepted as Mesoglossus bournei Menon, 1904
Saccoglossus bromophenolosus King, Giray & Kornfield, 1994
Saccoglossus caraibicus van der Horst, 1924 accepted as Mesoglossus caraibicus van der Horst, 1924
Saccoglossus gurneyi Robinson, 1927 accepted as Mesoglossus gurneyi Robinson, 1927
Saccoglossus horsti Brambell & Goodhart, 1941
Saccoglossus hwangtauensis Tchang & Koo, 1935
Saccoglossus inhacensis Kapelus, 1936
Saccoglossus kowalevskii (Agassiz, 1873)
Saccoglossus madrasensis Rao, 1957
Saccoglossus mereschkowskii (Wagner, 1885)
Saccoglossus otagoensis Benham, 1899
Saccoglossus palmeri Cameron, Deland & Bullock, 2010
Saccoglossus porochordus Cameron, Deland & Bullock, 2010
Saccoglossus pusillus Ritter, 1902
Saccoglossus pygmaeus Hinrichs & Jacobi, 1938 accepted as Mesoglossus pygmaeus Hinrichs & Jacobi, 1938
Saccoglossus rhabdorhyncus Cameron, Deland & Bullock, 2010
Saccoglossus ruber Tattersall, 1905
Saccoglossus shumaginensis Cameron, Deland & Bullock, 2010
Saccoglossus sonorensis Cameron, Deland & Bullock, 2010
Saccoglossus sulcatus (Spengel, 1893)
Saxipendium coronatum Woodwick & Sensenbaugh, 1985
Stereobalanus canadensis (Spengel, 1893)
Stereobalanus willeyi Ritter & Davis, 1904
Xenopleura vivipara Gilchrist, 1925