Exafroplacentals Temporal range: Paleocene - Holocene, 65–0 Ma |
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European mole (Boreoeutheria) | |
Giant anteater (Xenarthra) | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Infraclass: | Placentalia |
Clade: |
Exafroplacentalia Waddell et al, 2001 |
Orders and Clades | |
Magnorder Boreoeutheria:
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Magnorder Boreoeutheria:
Exafroplacentalia or Notolegia is a clade of placental mammals proposed in 2001 on the basis of molecular research.
Exafroplacentalia places Xenarthra as a sister group to the Boreoeutheria (comprising Laurasiatheria and Euarchontoglires), thus making Afrotheria a primitive group of placental mammals (the group name roughly means "those which are not African placentals").
One alternative hypothesis is the Epitheria hypothesis:
Another alternative hypothesis is the Atlantogenata hypothesis:
Updated analysis of transposable element insertions around the time of divergence strongly supports the fourth hypothesis of a near-concomitant origin of the three superorders of mammals: