Peltephilus

Peltephilus, the horned armadillo, is an extinct genus of dog-sized, armadillo xenarthran mammals which first inhabited Argentina during the Oligocene epoch, and became extinct in the Miocene epoch. Notably, the scutes on its head were so developed that they formed horns. Aside from the horned gophers of North America, it is the only known fossorial horned mammal.
Although it had traditionally been perceived as a carnivore because of its large, triangular-shaped teeth, Vizcaino and Farina argued in 1997 that "Peltephilus" was a herbivore.
Taxonomy.
The genus was classified as belonging to the family Chlamyphoridae, and in 2007 was placed in its own family Peltephilidae by Darin A. Croft, John J. Flynn and Andre Wyss.
Distribution.
Fossils of "Peltephilus" have been found in: