URMO Taxon list
Balanoglossus apertus (Spengel, 1893)
Balanoglossus aurantiaca (Girard, 1853)
Balanoglossus australiensis Hill, 1894
Balanoglossus biminiensis Willey, 1899 accepted as Balanoglossus gigas (Müller in Spengel, 1893)
Balanoglossus borealis Willey, 1899
Balanoglossus capensis Gilchrist, 1908
Balanoglossus carnosus Müller in Spengel, 1893
Balanoglossus clavigerus Delle Chiaje, 1829
Balanoglossus gigas (Müller in Spengel, 1893)
Balanoglossus hydrocephalus van der Horst, 1940
Balanoglossus jamaicensis Willey, 1899
Balanoglossus misakiensis Kuwano, 1902
Balanoglossus natalensis Gilchrist, 1908
Balanoglossus numeensis Maser, 1913 accepted as Balanoglossus carnosus Müller in Spengel, 1893
Balanoglossus occidentalis Ritter, 1902
Balanoglossus parvulus Punnett, 1903
Balanoglossus proliferans Gilchrist, 1908 accepted as Balanoglossus capensis Gilchrist, 1908
Balanoglossus proterogonius Belichov, 1928
Balanoglossus robinii Giard, 1882
Balanoglossus salmoneus Giard, 1882
Balanoglossus simodensis Miyamoto & Saito, 2007
Balanoglossus stephensoni van der Horst, 1937
Balanoglossus studiosorum van der Horst, 1940
Glossobalanus alatus van der Horst, 1940
Glossobalanus berkeleyi Willey, 1931
Glossobalanus crozieri van der Horst, 1924
Glossobalanus elongatus Spengel, 1904
Glossobalanus hedleyi (Hill, 1897)
Glossobalanus indicus Rao, 1955
Glossobalanus marginatus Meek, 1922
Glossobalanus minutus (Kowalevsky, 1866)
Glossobalanus mortenseni van der Horst, 1932
Glossobalanus parvulus Punnett, 1906
Glossobalanus polybranchioporus Tchiang & Liang, 1965
Glossobalanus ruficollis (Willey, 1899)
Glossobalanus sarniensis (Koehler, 1886)
Ptychodera asymmetrica Punnett, 1903
Ptychodera aurantiaca (Girard, 1853) accepted as Balanoglossus aurantiaca (Girard, 1853)
Ptychodera bahamensis Spengel, 1893
Ptychodera ceylonica Spengel, 1893 accepted as Ptychodera flava Eschscholtz, 1825
Ptychodera erythrea Spengel, 1893 accepted as Ptychodera flava Eschscholtz, 1825
Ptychodera flava Eschscholtz, 1825
Ptychodera pelsarti Dakin, 1916
Ptychodera viridis Punnett, 1903