Hyracodontidae Cope, 1879

Allacerops Wood, 1932

Aprotodon Forster-Cooper, 1915

Ardynia Matthew & Granger, 1923

Armania Gabunia & Dashzeveg, 1988

Benaratherium

Colonoceras Marsh, 1873

Cooperia Wood, 1938

Eggysodon Roman, 1910

Epitriplopus Wood, 1927

Forstercooperia Wood, 1938

Hyrachyus Leidy, 1871

Hyracodon Filhol, 1876

Ilianodon Chow & Xu, 1961

Imequincisoria Wang, 1976

Indricotherium Borisiak, 1915

Metahyrachyus Troxell, 1922

Pappaceras Wood, 1963

Paraceratherium Forster Cooper, 1911

Praeaceratherium Abel, 1910

Prohyracodon Koch, 1897

Prothyracodon Scott & Osborn, 1887

Rhodopagus Radinsky, 1965

Symphysorrhachis Belyaeva, 1954

Teniseggysodon Spassov, 1994

Tenisia Reshetov, Spassov & Baishashov, 1993

Triplopides

Triplopus Cope, 1880

Ulania Qi Tao, 1990