Mammalia - Notoungulata - Toxodontidae

Synonyms: Acrotherium karaikense Ameghino 1890, Adelphotherium repandum Mercerat 1891, Adelphotherium trivium Mercerat 1891, Nesodon marmoratus Ameghino 1887, Nesodon sullivani Owen 1846, Protoxodon marmoratus Ameghino 1887

Belongs to Nesodon according to D. A. Croft et al. 2004

Sister taxa: Nesodon andium, Nesodon brachycephalus, Nesodon cavifrons, Nesodon conspurcatus, Nesodon obliteratus, Nesodon ovinus, Nesodon patagonicus, Protoxodon patagonensis, Acrotherium rusticum, Acrotherium stygium

Ecology: scansorial herbivore

Average measurements (in mm): P3 19.8 x 25.2, P4 21.6 x 28.3, M1 31.4 x 27.6, M2 44.5 x 34.4, M3 52.1 x 28.9, m2 39.8 x 17.2, m3 75.0 x 22.0