Palaeanodonta

Palaeanodonta ("ancient toothless animals") is an extinct order of placental mammals in the clade Pholidotamorpha. They were insectivorous (myrmecophagous), fossorial or semifossorial, and lived from the middle Paleocene to early Oligocene in North America, Europe and Asia. While the taxonomic grouping of Palaeanodonta has been debated, it is widely thought that they are a sister group to pangolins.

Metacheiromys ("next to Cheiromys") is an extinct genus of placental mammals from extinct paraphyletic subfamily Metacheiromyinae within extinct paraphyletic family Metacheiromyidae in extinct order Palaeanodonta, that lived in North America (what is now Wyoming) from the early to middle Eocene.

Epoicotheriidae ("strange beasts") is an extinct paraphyletic family of insectivorous placental mammals within extinct order Palaeanodonta, that lived in North America, Asia and Europe from the middle Paleocene to early Oligocene. Epoicotheriids were fossorial mammals. Late Eocene/early Oligocene genera were highly specialized animals that were convergent with the talpids, golden moles and marsupial mole in the structure of their skulls and forelimbs, and would have had a similar lifestyle as subterranean burrowers. They are considered among the most specialized animals that have ever evolved

Ernanodon ("a sprout of toothless animals") is an extinct genus of placental mammal from extinct family Ernanodontidae within extinct order Palaeanodonta, that lived from the middle to late Paleocene in China (Nongshan Formation) and Mongolia.

Escavadodon ("tooth from Escavada") is an extinct genus of pangolin-like myrmecophagous placental mammals of extinct monotypic family Escavadodontidae within extinct order Palaeanodonta, that lived in North America during the middle Paleocene. It contains a single species, Escavadodon zygus, recovered from the Nacimiento Formation of New Mexico.

Xenocranium ("strange skull") is an extinct monotypic genus of placental mammal from extinct paraphyletic subfamily Epoicotheriinae within extinct paraphyletic family Epoicotheriidae in extinct order Palaeanodonta, that lived in North America during the late Eocene.

Ernanodontidae ("sprouts of toothless animals") is an extinct family of myrmecophagous placental mammals within extinct order Palaeanodonta, that lived in Asia from the middle to late Paleocene.

Metacheiromyidae ("next to Cheiromys") is an extinct paraphyletic family of myrmecophagous placental mammals within extinct order Palaeanodonta, that lived in North America and Europe from the late Paleocene to middle Eocene.