Atlantogenata

Atlantogenata Temporal range: Paleocene - Recent
African bush elephant (Afrotheria)
Giant anteater (Xenarthra)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Eutheria
Magnorder:	Atlantogenata
Superorders and Orders
Xenarthra ? Pilosa Cingulata Afrotheria ? Afrosoricida Macroscelidea Tubulidentata Bibymalagasia ? †Afredentata ? Hyracoidea Proboscidea Sirenia †Embrithopoda †Desmostylia ? Meridiungulata ? Notoungulata Litopterna Pyrotheria Astrapotheria Xenungulata See text for more details

Atlantogenata is a proposed clade of mammals containing the cohorts or superorders Afrotheria and Xenarthra. These groups originated and radiated in the South American and African continents, presumably in the Cretaceous. Together with Boreoeutheria, they make up Eutheria. The monophyly of this grouping was supported by some genetic evidence.

Alternative hypotheses are that Boreoeutheria and Afrotheria combine to form Epitheria (as generally supported by anatomical and other physiological evidence) or that Boreoeutheria and Xenarthra combine to form Exafroplacentalia or Notolegia.

Updated analysis of transposable element insertions around the time of divergence strongly supports the fourth hypothesis of a near-concomitant origin (trifurcation) of the three superorders of mammals.

Eutheria	Boreoeutheria Euarchontoglires Laurasiatheria   Atlantogenata   Xenarthra Afrotheria