Plesiadapiformes

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Plesiadapiformes
Temporal range: Paleocene–Eocene
Plesiadapis
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Mirorder: Primatomorpha
Order: Plesiadapiformes
Families

Plesiadapiformes ("Adapid-like" or "near Adapiformes") is an extinct order of mammals. It is either closely related to the primates or a precursor to them. Many are too derived to be ancestral to primates, but the earliest Plesiadapiformes have teeth that are strongly indicative of a common ancestor. Purgatorius is believed to be close to the last common ancestor of primates and Plesiadapiformes.

Plesiadapiformes first appear in the fossil record between 65 and 55 million years ago,[1] though many were extinct by the beginning of the Eocene. It is possible that they are the first mammals to have developed finger nails in place of claws.[2]

Euarchontoglires
Glires

Rodentia (rodents)



Lagomorpha (rabbits, hares, pikas)



Euarchonta

Scandentia (treeshrews)




Dermoptera (colugos)




†Plesiadapiformes



Primates






One possible classification table of plesiadapiform families is listed below.

References[edit]

External links[edit]