Atlantogenata
| Atlantogenata Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Placentalia |
| Clade: | Atlantogenata Waddell et al, 1999[1] |
| Subgroups | |
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Atlantogenata 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 Eutheria. The monophyly of this grouping is supported by some genetic evidence.[2][3]
Alternative hypotheses are that Boreoeutheria and Afrotheria combine to form
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: Afrotheria, Boreoeutheria, and Xenarthra.[5][6]
| Eutheria |
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Below shows the phylogeny of the extant atlantogenate families.
| Atlantogenata |
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References
Further reading
- Nikolaev, Sergey; Montoya-Burgos, Juan I.; Margulies, Elliott H.; NISC Comparative Sequencing Program; Rougemont, Jacques; Nyffeler, Bruno; Antonarakis, Stylianos E. (2007). "Early History of Mammals is Elucidated with the ENCODE Multiple Species Sequencing Data". PMID 17206863.
- Springer, Mark S.; Murphy, William J.; Eizirik, Eduardo; O'Brien, Stephen J. (2003). "Placental mammal diversification and the Cretaceous–Tertiary boundary". PMID 12552136.
- Waddell, Peter J.; Kishino, Hirohisa; Ota, Rissa (2001). "A phylogenetic foundation for comparative mammalian genomics". PMID 11791233. Archived from the originalon 2019-07-10. Retrieved 2015-08-27.
- Wildman, Derek E.; Chen, Caoyi; Erez, Offer; Grossman, Lawrence I.; Goodman, Morris; Romero, Roberto (2006). "Evolution of the mammalian placenta revealed by phylogenetic analysis". PMID 16492730.
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