Full reference: M. Spaulding, M. A. O'Leary, and J. Gatesy. 2009. Relationships of Cetacea (Artiodactyla) among mammals: Increased taxon sampling alters interpretations of key fossils and character evolution. PloS One 4(9):e7062
Parent taxon: Artiodactyla according to M. Spaulding et al. 2009
Sister taxa: Achaenodontidae, Achtiaria, Antiacodontidae, Antiacodontinae, Caenotheriidae, Cetancodontamorpha, Choeropotamoidea, Delahomeryx, Dichobunoidea, Dulcidon, Eolantianus, Eschatiidae, Eurytheriidae, Helohyinae, Hexacodus, Hidrosotherium, Hsanotherium, Leptochoerinae, Lophiomerycidae, Neoselenodontia, Nonruminantia, Palaeodonta, Protolabididae, Raoellidae, Raphenacodus, Simpsonodus, Suiformes, Suoidea, Tragulohyus, Tylopoda, Whippomorpha, Entelodontoidea, Ancodonta, Cetruminantia
Subtaxa: Protoceratidae, Ruminantia
Ecology: ground dwelling grazer-browser