Exafroplacentalia

Notolegia
Exafroplacentalia or Notolegia is a clade of placental mammals proposed in 2001 on the basis of molecular research.wikipedia
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Placentalia

placentalplacental mammalplacental mammals
Exafroplacentalia or Notolegia is a clade of placental mammals proposed in 2001 on the basis of molecular research.
These hypotheses are Atlantogenata (basal Boreoeutheria), Epitheria (basal Xenarthra), and Exafroplacentalia (basal Afrotheria).

Xenarthra

Edentataedentatexenarthran
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").
Xenarthra may be most closely related to either Afrotheria (in the group Atlantogenata), Boreoeutheria (in the group Exafroplacentalia), or Epitheria (comprising Afrotheria and Boreoeutheria).

Epitheria

One alternative hypothesis is the Epitheria hypothesis:
Alternative hypotheses place either Atlantogenata and Boreoeutheria, or Afrotheria and Exafroplacentalia (Notolegia) at the base of the tree:

Atlantogenata

atlantogenates
Another alternative hypothesis is the Atlantogenata hypothesis:
Alternative hypotheses are that Boreoeutheria and Afrotheria combine to form Epitheria (as generally supported by anatomical and other physiological evidence) or that Boreoeutheria and Xenarthra combine to form Exafroplacentalia or Notolegia.

Clade

cladesgroupcladistic
Exafroplacentalia or Notolegia is a clade of placental mammals proposed in 2001 on the basis of molecular research.

Boreoeutheria

Boreoeutherianboreoeutherian ancestorBoreotheria
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").

Laurasiatheria

laurasiathereLaurasiatherescows
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").

Euarchontoglires

Supraprimates Supraprimates
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").

Transposable element

transposontransposable elementstransposons
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:

Paleocene

Giant anteater

MyrmecophagaMyrmecophaga tridactylagiant anteaters

Cingulata

Eulipotyphla

insectivoresEulipotyphylaEulypotyphla

Even-toed ungulate

artiodactyleven-toed ungulatesCetartiodactyla

Bat

Odd-toed ungulate

Perissodactylaperissodactylsperissodactyl

Pangolin

Glires

gliriformsAnagalidaGliriformes

Rodent

rodentsRodentiaRodentia indet.

Lagomorpha

lagomorphlagomorphsDuplicidentata