Doedicurus is a glyptodont, extinct relative of armadillos. The scutes from the carapace are less attached to one another than in other glyptodonts, they are thicker, are not ornamented and have two or three large holes in them. Their caudal tubes – the armor that covered their tails – was impressive, it could span up to a meter in length and was thicker at the end, with shallow cavities that held large spikes. They could weigh up to a ton and a half. Their name means “Pestle tail”.