Gourt Home::Gourt :: Hystricognatha
- Hystricognatha Woods, 1976
- Abrocomidae Miller and Gidley,
- Agoutidae Gray, 1821
- Bathyergidae Waterhouse, 1841
- Capromyidae Smith, 1842
- Caviidae Gray, 1821
- Chinchillidae Bennett, 1833
- Dinomyidae Troschel, 1874
- Echimyidae Gray, 1825
- Erethizontidae Bonaparte, 1845
- Heptaxodontidae Anthony, 1917
- Hydrochaeridae Gray, 1825
- Hystricidae G. Fischer, 1817
- Laonastidae Jenkins, Kilpatrick, Robinson et Timmins, 2005
- Octodontidae Waterhouse, 1840
- Petromuridae Tullberg, 1899
- Thryonomyidae Pocock, 1922
"Hystricognatha"