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Xenarthra (/ z ɛ ˈ n ɑːr θ r ə /; from Ancient Greek ξένος, xénos, "foreign, alien" + ἄρθρον, árthron, "joint") is a major clade of placental mammals native to the Americas. There are 31 living species: the anteaters , tree sloths , and armadillos . [ 1 ]
Animals in Olfactores are characterized as having a more advanced olfactory system than animals not in it. ... Superorder Xenarthra. Order Cingulata, armadillos ...
Together with the armadillos, which are in the order Cingulata, pilosans are part of the larger superorder Xenarthra, a defining characteristic of which is the presence of xenarthrals (extra formations between lumbar vertebrae). In the past, Pilosa was regarded as a suborder of the order Xenarthra, while some more recent classifications regard ...
Anteaters and armadillos are also included among Xenarthra. The earliest xenarthrans were arboreal herbivores with sturdy vertebral columns, fused pelvises, stubby teeth, and small brains. Sloths are in the taxonomic suborder Folivora [2] of the order Pilosa. These names are from the Latin 'leaf eater' and 'hairy', respectively.
Cingulata, part of the superorder Xenarthra, is an order of armored New World placental mammals. Dasypodids and chlamyphorids, the armadillos, are the only surviving families in the order. [1]
Both the Pholidota and Palaeanodonta orders were formerly placed with other orders of ant-eating mammals, most notably Xenarthra (armadillos, sloths, anteaters, which they superficially resemble); some palaeontologists, throughout the history of zoology, have placed pangolins and palaeanodonts as a suborder, Pholidota, in the greater order Cimolesta, alongside the extinct family Ernanodontidae ...
Myrmecophagids belong to the Xenarthra, formerly known as Edentata, which also includes sloths and armadillos. [3] Edentates (meaning without teeth) diverged from insectivores during the Cretaceous period, roughly 135 million years ago.
Atlantogenata ("born around the Atlantic Ocean") [2] is a proposed clade of placental mammals containing the cohorts or superorders Xenarthra and Afrotheria. [1] These groups originated and radiated in the South American and African continents, respectively, presumably in the Cretaceous. Together with Boreoeutheria, they make up Placentalia.