Acanthospirifer Menakova, 1964 † (verified source for family)
Acuminothyris Roberts, 1963 † (verified source for family)
Acutilineotus Amsden, 1978 † (verified source for family)
Adminiculoria Waterhouse & Gupta, 1979 † (verified source for family)
Afghanospirifer Plodowski, 1968 † (verified source for family)
Aldanispirifer Alekseeva, 1967 † (verified source for family)
Alispirifer Campbell, 1961 † (verified source for family)
Allanaria Crickmay, 1953 † accepted as Allanella Crickmay, 1953 † (verified source for family)
Allanella Crickmay, 1953 † (verified source for family)
Alphaprotinus Waterhouse, 2016 † (original description)
Amboglossa Wang & Zhu, 1979 † (verified source for family)
Ambothyris George, 1931 † (verified source for family)
Amesopleura Carter, 1967 † (verified source for family)
Angiospirifer Legrand-Blain, 1985 † (verified source for family)
Angiospiriferidae Legrand-Blain, 1985 † (basis of record)
Angulispirifer Waterhouse, 2016 † (original description)
Anomaloria Cooper & Grant, 1969 † (verified source for family)
Anthracothyrina Legrand-Blain, Delvolve & Perret, 1984 † (verified source for family)
Apenosia Waterhouse, 2016 † (original description)
Astegosia Cooper & Grant, 1969 † (verified source for family)
Avisyrinx Martinez-Chacon, 1975 † (verified source for family)
Badainjarania Zhang, 1981 † (verified source for family)
Bashkiria Nalivkin, 1979 † (verified source for family)
Baterospirifer Rong, Su & Li, 1984 † (verified source for family)
Besnossoviella Waterhouse, 2016 † (original description)
Bingleburria Waterhouse, 2016 † (original description)
Biramus Waterhouse, 2016 † (original description)
Brachythyridae † accepted as Brachythyrididae Fredericks, 1924 † (basis of record)
Brachythyrina Fredericks, 1929 † (verified source for family)
Bullarina Jing & Sun, 1981 † (verified source for family)
Calvustrigis Carter, 1987 † (verified source for family)
Cantabriella Martinez Chacon & Rio Garcia, 1987 † (verified source for family)
Capillispirifer Zhang, 1983 † (verified source for family)
Carteriopsis Waterhouse, 2016 † (original description)
Catatonaria Waterhouse, 2016 † (original description)
Chuiella Chen & Shi, 1999 † (verified source for family)
Collinusia Waterhouse, 2016 † (original description)
Condrathyridae Waterhouse, 2016 † (original description)
Condrathyris Minato, 1953 † accepted as Phricodothyris George, 1932 † (verified source for family)
Crickmayoria Waterhouse, 2016 † (original description)
Crurispina Goldman & Mitchell, 1990 † (verified source for family)
Diazoma Durkoop, 1970 † accepted as Kelusia Mamedov, 1978 † (verified source for family)
Ejnespirifer Fu, 1982 † (verified source for family)
Elinoria Cooper & Muir-Wood, 1951 † accepted as Brachythyrina Fredericks, 1929 † (verified source for family)
Elivella Fredericks, 1924 † (verified source for family)
Emanuella Grabau, 1925 † (verified source for family)
Endospirifer Tachibana, 1980 † (verified source for family)
Engania Waterhouse, 2016 † (original description)
Eobrachythyrina Lazarev & Poletaev, 1982 † (verified source for family)
Eomartiniopsidae Carter, 1994 † (basis of record)
Eomartiniopsis Sokolskaïa, 1941 † (verified source for family)
Eospirifer Schuchert in Eastman-Zittel, 1913 † (verified source for family)
Eospiriferidae Schuchert, 1929 † (basis of record)
Espella Nilova, 1965 † (verified source for family)
Eurekaspirifer Johnson, 1966 † (verified source for family)
Fidespirifer Lyashenko, 1973 † (verified source for family)
Filispirifer Jansen, 2001 † (verified source for family)
Fusella M'Coy, 1844 † (verified source for family)
Georginakingia Waterhouse, 2004 † (verified source for family)
Georginakingiidae Waterhouse, 2004 † (basis of record)
Globispirifer Tachibana, 1964 † (verified source for family)
Haplospirifer Lee & Gu, 1976 † (verified source for family)
Havlicekia Boucot, 1963 † (verified source for family)
Hedeina Boucot, 1957 † (verified source for family)
Heteraria Cooper & Grant, 1976 † (verified source for family)
Holcospirifer Bassett, Cocks & Holland, 1976 † (verified source for family)
Howellella Kozlowski, 1946 † (verified source for family)
Howellellidae † (basis of record)
Huaitakithyris Waterhouse, 2016 † (original description)
Ilmospirifer Lyashenko, 1969 † (verified source for family)
Iwaispirifer Tachibana, 1964 † (verified source for family)
Janius Havlicek, 1957 † (verified source for family)
Johncarteria Waterhouse, 2004 † (verified source for family)
Johnsononia Waterhouse, 2016 † (original description)
Junglelomia Waterhouse, 2016 † (original description)
Kelusia Mamedov, 1978 † (verified source for family)
Khaophrikia Waterhouse, 2016 † (original description)
Kisilia Nalivkin, 1979 † (verified source for family)
Kletsia Waterhouse, 2016 † (original description)
Krabispirifer Waterhouse, 2016 † (original description)
Ladjia Veevers, 1959 † (verified source for family)
Ladjiidae Waterhouse, 2016 † (original description)
Laevispirifer Ushatinskaya, 1977 † (verified source for family)
Latiplecus Lee & Gu, 1976 † (verified source for family)
Leonispirifer Schemm-Gregory, 2010 † (verified source for family)
Litothyris Roberts, 1971 † (verified source for family)
Longathyrina Shi, Chen & Zhan, 2005 † accepted as Brachythyrina Fredericks, 1929 † (verified source for family)
Longiusculus Waterhouse, 2016 † (original description)
Losvia Breivel & Breivel in Tyazheva, Zhavoronkova & Garifullina, 1976 † (verified source for family)
Lusitanispirifer Schemm-Gregory, 2011 † (verified source for family)
Macropleura Boucot, 1963 † (verified source for family)
Mandageryia Waterhouse, 2016 † (original description)
Martiniella Grabau & Tien in Grabau, 1931 † (verified source for family)
Martinothyris Minato, 1953 † (verified source for family)
Mauispirifer Allan, 1947 † (verified source for family)
Merospirifer Reed, 1949 † (verified source for family)
Mictospirifer Johnson, 1995 † (verified source for family)
Minatodina Waterhouse, 2016 † (original description)
Minispinusuria Waterhouse, 2016 † (original description)
Minutilla Crickmay, 1967 † (verified source for family)