Alternative spelling: Ruminantii
Synonym: Ruminantes Gray 1821
Parent taxon: Artiodactyla according to B. Wang et al. 2025
See also Agnarsson and May-Collado 2008, Anyonge 1991, Asher and Helgen 2010, Becker et al. 2010, Boisserie et al. 2011, Boisserie et al. 2005, Bravo-Cuevas et al. 2013, Carroll 1988, Ferrusquia-Villafranca 1969, Gray 1821, Gregory 1910, Jaekel 1911, Khan and Sarwar 2002, Koufos 2020, Leidy 1873, McKenna and Bell 1997, Mead and Taylor 2005, Mennecart et al. 2021, Owen 1848, Sach and Heizmann 2001, Scott 1940, Spaulding et al. 2009, Thurmond and Jones 1981, Ursing et al. 2000, Waddell et al. 1999 and Webb 2008
Sister taxa: Antiacodontidae, Antiacodontinae, Bunomerycidae, Cainotherioidea, Choeropotamoidea, Climacoceratidae, Diacodexeidae, Dichobunoidea, Eolantianus, Erlianhyus, Eurytheriidae, Haplobunodontidae, Hsanotherium, Leptochoerinae, Merycoidodontoidea, Myanmarius, Neoselenodontia, Nonruminantia, Omnivora, Raphenacodus, Ruminantiamorpha, Selenodontia, Suiformes, Suoidea, Tapirulidae, Tragulohyus, Trigonolestidae, Tylopoda, Entelodontoidea, Cetruminantia, Whippomorpha
Subtaxa: Agriochoeridae Andegamerycidae Anoplotheriadae Bachitheriidae Delahomeryx Giraffoidea Hispanomerycidae Krabitherium Merycotherium Mosaicomeryx Paalitherium Palaeohypsodontus Pecora Prodremotherium Sanitherium Sivatherinae Thandaungia Tragulina