Suborder Phyllophaga Owen 1842 (edentate)
Parent taxon: Xenarthra according to C. Muizon et al. 2004
Sister taxa: Anicanodonta, Chlamytheridae, Cingulata, Ernanodontidae, Pilosa, Nomarthra, Hicanodonta
Subtaxa: Megalonychoidea
Ecology: ground dwelling herbivore