| Atlantogenata Fossil range: Paleocene - Recent |
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| Hoffmann's Two-toed Sloth | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Eutheria |
| (unranked): | Atlantogenata |
| Superorders and Orders | |
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Atlantogenata is a proposed clade of mammals containing the cohorts or super-orders Xenarthra and Afrotheria. These groups originated and radiated in the South American and African continents, presumably in the Cretaceous. Together with Boreoeutheria it makes up Eutheria.
The monophyly of this grouping is supported by some genetic evidence.[1][2] Alternative hyphotheses are that Boreoeutheria and Afrotheria combine to form Epitheria, and that Boreoeutheria and Xenarthra combine to form a monophyletic group called Exafroplacentalia or Notolegia.[3]
References
- ^ Waddell, P., Okada, N. & Hasegawa, M. 1999. Toward resolving the inter-ordinal relationships of placental mammals. Systematic Biology 48: 1–5.
- ^ Murphy, W.J., Pringle, T.H., Crider, T.A., Springer, M.S. & Miller, W. 2007. Using genomic data to unravel the root of the placental mammal phylogeny. Genome Research 17: 413–421.
- ^ Wildman, D.E.; Chen, C.; Erez, O.; Grossman, L.I.; Goodman, M. & Romero, R. 2006. Evolution of the mammalian placenta revealed by phylogenetic analysis. PNAS 103 (9): 3203–3208.
External links
- Waddell PJ, Kishino H, Ota R. 2001. A phylogenetic foundation for comparative mammalian genomics. Genome Inform Ser Workshop Genome Inform 12: 141–154
- Mark S. Springer, William J. Murphy, Eduardo Eizirik, and Stephen J. O'Brien (Edited by Morris Goodman). 2002 Placental mammal diversification and the Cretaceous-Tertiary boundary
- Wildman D.E.; Chen C.; Erez O.; Grossman L.I.; Goodman M.; Romero R. 2006. Evolution of the mammalian placenta revealed by phylogenetic analysis. PNAS 103 (9): 3203–3208
- Nikolaev, S., Montoya-Burgos, J.I., Margulies, E.H., Rougemont, J., Nyffeler, B., Antonarakis, S.E. 2007. Early history of mammals is elucidated with the ENCODE multiple species sequencing data. PLoS Genet. 3:e2, doi:10.1371/journal.pgen.0030002.
- Gennady Churakov, Jan Ole Kriegs, Robert Baertsch, Anja Zemann, Jürgen Brosius, Jürgen Schmitz. 2008. Mosaic retroposon insertion patterns in placental mammals
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