paleontologist a. r. biknevicius and his team have estimated body size for "amblyrhiza inundata" based upon 5 femora and 9 humeri from adult "amblyrhiza" remains. they concluded based upon these specimens that "amblyrhiza" ranged from just under 50 kg in mass to over 200 kg in mass. these calculations were based on comparisons with extant caviomorphs of 16 different species. the blunt teeth of "amblyrhiza inundata" suggest an herbivorous lifestyle, consistent with that of the other genera within heptaxodontidae.