Mammalia - Notoungulata - Oldfieldthomasiidae

Synonym: Acoelodidae Ameghino 1901

Parent taxon: Notoungulata according to L. G. Marshall and C. de Muizon 1983

See also Ameghino 1901, Carroll 1988, Simpson 1934, Simpson 1935, Simpson 1967 and Simpson et al. 1962

Sister taxa: Acoelodus, Albertogaudryidae, Allalmeia, Archaeogaia, Archaeopithecidae, Archaeoplus, Archaeotypotherium transitum, Brandmayria, Carolodarwinia, Carolodarwinia pyramidentata, Claenodon patagonicus, Degonia sympathica, Edvardocopeia, Edvardocopeia sinuosa, Entelonychia, Epitypotherium cancellatum, Eudiastatus, Eurystephanodon, Hegetotheria, Henricosborniidae, Heterolophodon, Homalodotheria, Isotypotherium, Lophiodonticulus, Lophiodonticulus patagonicus, Lophiodonticulus retroversus, Notioprogonia, Notopithecidae, Notopithecus summus, Notostylopidae, Orthogenium ameghinoi, Ortholophodon, Pleurystylops, Pleurystylops glebosus, Procolpodon, Procolpodon foratus, Pyramidon, Pyramidon klaatschi, Tonostylops, Tonostylops spissus, Toxodontia, Trimerostephanos ultimus, Typotheria, Typotheroidea, Ultrapithecus robustus

Subtaxa: Brachystephanus Camargomendesia Colbertia Dolichostylodon Itaboraitherium Kibenikhoria Maxschlosseria Oldfieldthomasia Paginula Suniodon Tsamnichoria Ultrapithecus Xenostephanus

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Type: Oldfieldthomasia

Ecology: scansorial herbivore

Distribution:

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