Kingdom Animalia Scientific name Exafroplacentalia Phylum Chordata | Infraclass Placentalia Higher classification Placentals | |
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Clade Exafroplacentalia
Waddell et al, 2001 Lower classifications Laurasiatheria, Rodent, Primate, Carnivores, Even‑toed ungulate | ||
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").
Alternative hypotheses
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:
References
Exafroplacentalia Wikipedia(Text) CC BY-SA