Alacia alata alata (Müller, G. W., 1906) (basis of record)
Alacia belgicae (Müller, 1906) (basis of record)
Alacia hettacra (Müller, 1906) (basis of record)
Alacia valdiviae (Müller, 1906) (additional source)
Archiconchoecemma Chavtur & Stovbun, 2003 (basis of record)
Archiconchoecemma simula (Deevey, 1982) (basis of record)
Archiconchoecetta Chavtur & Stovbun, 2003 (basis of record)
Archiconchoecetta bidens (Deevey, 1982) (basis of record)
Archiconchoecia Müller, 1894 (additional source)
Archiconchoecia simula Deevey, 1982 accepted as Archiconchoecemma simula (Deevey, 1982) (source of synonymy)
Archiconchoecilla Chavtur & Stovbun, 2003 (basis of record)
Archiconchoecilla versicula (Deevey, 1978) (basis of record)
Archiconchoecinae accepted as Archiconchoeciinae Poulsen, 1969 (basis of record)
Archiconchoecissa Chavtur & Stovbun, 2003 (basis of record)
Archiconchoecissa cucullata Brady, 1902 (basis of record)
Bathyconchoecia Deevey, 1968 (additional source)
Bathyconchoecia lacunosa Müller G. W., 1906 (basis of record)
Boroecia antipoda (Müller, G. W., 1906) (basis of record)
Conchoecia hyalophyllum Claus, 1890 accepted as Hyalocoecia hyalophyllum (Claus, 1890) (additional source)
Conchoecia magna Claus, 1874 (additional source)
Conchoecia parvidentata Müller G. W., 1906 accepted as Parvidentoecia parvidentata (Müller, 1906) (additional source)
Conchoeciinae Müller G. W., 1912 (basis of record)
Conchoecilla chuni (Müller, G. W., 1906) (basis of record)
Conchoecissa imbricata (Brady, 1880) (additional source)
Conchoecissa squamosa (Mueller, 1906) (basis of record)
Conchoecissa symmetrica (Müller, G. W., 1906) (additional source)
Cypridinidae Baird, 1850 (additional source)
Discoconchoecia elegans (Sars, 1866) (additional source)
Euconchoecinae accepted as Euconchoeciinae Poulsen, 1969 (basis of record)
Fellia Poulsen, 1969 (basis of record)
Fellia dispar (Müller, 1906) (basis of record)
Gaussicia edentata (Müller, G. W., 1906) (additional source)
Gaussicia gaussi (Müller, G. W., 1906) (additional source)
Gigantocypris Müller, 1895 (additional source)
Gigantocypris muelleri Skogsberg, 1920 (additional source)
Gigantocypris pellucida Müller, 1895 (basis of record)
Halocypria Poulsen, 1969 (additional source)
Halocypria globosa Claus, 1874 (additional source)
Halocypridinae (basis of record)
Loricoecia ctenophora (Müller, G. W., 1906) (additional source)
Loricoecia loricata (Claus, 1894) (additional source)
Macrocypridina Skogsberg, 1920 (additional source)
Macrocypridina castanea (Brady, 1897) (additional source)
Macrocypridina poulseni Martens, 1979 (basis of record)
Metaconchoecia Howe, 1955 (additional source)
Metaconchoecia australis (Gooday, 1981) (basis of record)
Metaconchoecia skogsbergi (Iles, 1953) (additional source)
Metaconchoecinna Chavtur & Angel accepted as Deeveyoecia Chavtur & Angel, 2011 (basis of record)
Metaconchoecinna arcuata (Deevey, 1978) accepted as Deeveyoecia arcuata (Deevey, 1978) (basis of record)
Mikroconchoecia Claus, 1891 (additional source)
Mikroconchoecia acuticosta Müller G. W., 1906 (additional source)
Mikroconchoecia curta (Lubbock, 1860) (additional source)
Mollicia Poulsen, 1973 (additional source)
Mollicia amblypostha (Müller, G. W., 1906) (basis of record)
Obtusoecia Martens, 1979 (additional source)
Obtusoecia antarctica (Müller, G. W., 1906) (basis of record)
Orthoconchoecia Granata & Caporiacco, 1949 (additional source)
Orthoconchoecia atlantica (Lubbock, 1856) (additional source)
Orthoconchoecia bispinosa (Claus, 1890) (additional source)
Orthoconchoecia haddoni (Brady & Norman, 1896) (additional source)
Orthoconchoecia secernenda (Vavra, 1906) (additional source)
Paraconchoecia Claus, 1891 (additional source)
Paraconchoecia mamillata (Müller, 1906) (additional source)
Paraconchoecia spinifera Claus, 1890 (additional source)
Paramollicia Poulsen, 1973 (additional source)
Paramollicia major Müller G. W., 1906 (additional source)
Proceroecia Kock, 1992 (additional source)
Proceroecia brachyaskos (Müller, G. W., 1906) (additional source)
Proceroecia rivotella McKenzie & Benassi, 1994 (basis of record)
Pseudoconchoecia Claus, 1891 (additional source)
Pseudoconchoecia serrulata (Claus, 1874) (basis of record)
Thaumatoconcha Kornicker & Sohn, 1976 (basis of record)
Thaumatoconcha radiata Kornicker & Sohn, 1976 (basis of record)
Thaumatoconcha sandersi Kornicker & Sohn, 1976 (basis of record)
Thaumatocyprididae Müller, 1906 (additional source)

 Validity

 for Orthoconchoecia haddoni (Brady & Norman, 1896)

Orthoconchoecia haddoni 'southern form' (Müller, G.W., 1906) [details]