There are 31 xenarthran species living today, made up of armadillos, anteaters, and sloths. These animals are characterized by a narrow, elongated skull and a unique vertebral process in the posterior trunk. Xenarthra represents an apobaramin within which several holobaramins may be discerned, using both mitochondrial DNA and morphological data. On a biblical basis, armadillos could possibly be classified as remes (creeping) animals because of their burrowing activity. On the other hand, sloths and anteaters are likely beasts of the field (b'hemah) because of their larger size and movement and the arboreal lifestyle of some sloths. The morphological results suggest that there are two armadillo holobaramins. The first group is made up of genera, such as Dasypus, Tolypeutes, Kuntinaru, Stegotherium, Priodontes, and Cabassous. The other group consists of the genera Peltephilus, Vassallia, Propalaeohoplophorus, Eutatus, Chlamyphorus, Zaedyus, Prozaedyus, Paleuphractus, Macroeuphractus, Doellotatus, Proeutatus, Euphractus, and Chaetophractus. The mitochondrial DNA analysis shows that Cabassous and Tolypeutes separate from Dasypus. However, this may be due to the fragmentary nature of the mitochondrial genome. It appears that Vermilingua (anteaters) approximate a single holobaramin, consisting of the genera Tamandua, Myrmecophaga, and Cyclopes. This can be seen based on the mitochondrial DNA results. There is one instance of morphological continuity between Tamandua and Priodontes, but Tamandua is also discontinuous with most genera in the large second group of armadillos. Concerning sloths, it appears that there may be one or more groups. The two extant genera, Bradypus and Choloepus are tree sloths, which might be separate from ground sloths due to their locomotion, although there is no decisive evidence for discontinuity between tree and ground sloths. On a molecular level, however, all sloths share numerous "sloth endogenized foamy-like retroviruses," which unite them. Furthermore, the dental formula of 5+4 upper and lower teeth is generally characteristic of all sloths.