Thecosomata Blainville, 1824

Altaspiratella Korobkov, 1966

Bovicornu Meyer, 1886

Bucanoides Hodgkinson, 1992

Camptoceratops Wenz, 1923

Cavolinidae

Cavoliniidae H. & A. Adams, 1854

Cheilospicata Hodgkinson, 1992

Cliidae Jeffreys, 1869

Creseidae Curry, 1982

Currylimacina Janssen, 2003

Cymbuliidae Gray, 1840

Desmopteridae Dall, 1921

Diacrolinia Janssen, 1995

Edithinella Janssen, 1995

Euchilotheca Fischer, 1882

Gamopleura Bellardi, 1872

Ireneia Janssen, 1995

Limacinidae Blainville, 1823

Lomia

Loxobidens Hodgkinson, 1992

Paraclididae

Peraclidae Tesch, 1913

Peraclididae C. W. Johnson, 1915

Plotophysops Curry, 1982

Praehyalocylis Korobkov, 1962

Pygmella Tembrock, 1989

Skaptotion Curry, 1965

Sphaerocina Jung, 1971

Sphaerocinidae Janssen & Maxwell, 1995

Striolimacina Janssen, 1999

Thecopsella Cossmann, 1888