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Notolegia

Exafroplacentals
Temporal range: Paleocene - Holocene, 65–0 Ma
Talpa europaea MHNT.jpg
European mole (Boreoeutheria)
Myresluger2.jpg
Giant anteater (Xenarthra)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Clade: Exafroplacentalia
Waddell et al, 2001
Orders and Clades

Magnorder Boreoeutheria:


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").

Afrotheria

Xenarthra

Laurasiatheria

Euarchontoglires

One alternative hypothesis is the Epitheria hypothesis:

Xenarthra

Afrotheria

Euarchontoglires

Laurasiatheria

Another alternative hypothesis is the Atlantogenata hypothesis:

Xenarthra

Afrotheria

Euarchontoglires

Laurasiatheria

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:

Xenarthra

Afrotheria

Euarchontoglires

Laurasiatheria


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