Group Importance Physical, Behaviour
Plesiadapiforms Controversial Some primate, some non-primate features
whether or not it
is a primate
Carpolestes Common ancestor No stereoscopic vision, nails (claws), grasping hands
simpsoni of adapids and and feet
Adapids Diurnal. Leaf and fruit. Canine sexual dimorphism, 4
(lemur-like) premolars characteristic early mammals.
Notharctus Stereoscopic vision, reduced muzzle, powerful hind
Omomyids Large yes, long tarsal bones, small. 2 incisors, 3
(tarsier-like) premolars. Large occipital and temporal lobes
Nocturnal (?), eat insects, fruit.
Catopithecus Emergence of Detention suggests fruit, insects.
Agile arboreal quadruped
Parapithecids Most believe 3 premolars each quarter, bony partition between
(monkey-like) preceded split eye sockets, broad incisors, projecting canines, low
Apidium (best between old and rounded cusps on molars. Prosimian-like premolars
known New World and small brains. Small
locomotion – Monkeys Diurnal. Ate fruit and seeds.
leaping) (ancestors to
Propliothecids Detention of Bony partition between eye sockets, broad incisors,