Mammalia - Notoungulata - Toxodontidae

Synonyms: Acrotherium Ameghino 1887, Adelphotherium Ameghino 1887, Protoxodon Ameghino 1887

Parent taxon: Nesodontinae according to D. A. Croft et al. 2004

Sister taxa: Adinotherium, Gronotherium, Phobereotherium, Probereotherium, Pronesodon, Rhadinotherium, Senodon, Xotoprodon

Subtaxa: Acrotherium rusticum, Acrotherium stygium, Nesodon andium, Nesodon brachycephalus, Nesodon cavifrons, Nesodon conspurcatus, Nesodon imbricatus, Nesodon obliteratus, Nesodon ovinus, Nesodon patagonicus, Protoxodon patagonensis

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Type: Nesodon imbricatus

Ecology: scansorial herbivore