Plesiadaptiformes (1 gen 56000000 anni a. C. – 1 gen 54000000 anni a. C.)

Descrizione:

A taxonomic order, parallel or ancestral to modern Primates;
•Appeared during the Paleocene, between 56 and 54 mya;
•Like modern Strepsirrhines, they were nocturnal, arboreal, largely reliant on smell and able to leap from branch to branch;
•Unlike all primates, however, they lacked either a postorbital bar or closure;
•Inaddition, they had monocular vision, claws instead of nails and relatively small brains

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