Anthostrongylus Croveri, 1929 accepted as Impalaia Mönnig, 1923 (verified source for family)
Baylisiella Skrjabin & Schulz, 1937 accepted as Paralibyostrongylus Ortlepp, 1939 (verified source for family)
Biogastranema Rohrbacher & Ehrenford, 1954 (verified source for family)
Chabaudstrongylus Durette-Desset & Denke, 1978 (verified source for family)
Cnizostrongylus Chabaud, Durette-Desset & Houin, 1967 (verified source for family)
Cooperia Ransom, 1907 (verified source for family)
Cooperioides Daubney, 1933 accepted as Cooperia Ransom, 1907 (verified source for family)
Cooperoides accepted as Cooperia Ransom, 1907 (verified source for family)
Gazellostrongylus Yeh, 1956 (verified source for family)
Hoazinstrongylus Magalhães Pinto & Corrêa Gomes, 1985 (verified source for family)
Impalaia Mönnig, 1923 (verified source for family)
Lamothiella Gonzales, 1984 accepted as Teporingonema Harris, 1985 (verified source for family)
Laurostrongylus Durette-Desset & Chabaud, 1992 (verified source for family)
Megacooperia Khalil & Gibbons, 1976 (verified source for family)
Minutostrongylus Leroux, 1936 (verified source for family)
Neocooperia Fotedar & Bambroo, 1971 (verified source for family)
Obeliscus Graybill, 1923 accepted as Obeliscoides Graybill, 1924 (verified source for family)
Paracooperia Travassos, 1935 (verified source for family)
Paracooperioides Boomker, Horak & de Vos, 1981 (verified source for family)
Paralibyostrongylus Ortlepp, 1939 (verified source for family)
Pararhabdonema Kreis, 1945 (verified source for family)
Pseudostertagia Orloff, 1933 (verified source for family)
Schwartziella Leroux, 1936 accepted as Paracooperia Travassos, 1935 (verified source for family)
Tapironema Durette-Desset, Chabaud & Sutton, 1997 (verified source for family)
Teporingonema Harris, 1985 (verified source for family)