A wide-eyed, brown primate with large ears hangs from green branches in a lush jungle, illustration.

A primate the size of a modern tarsier, Quadrupedal but agile, with long limbs adapted for leaping and climbing, long tail for balancing in trees, very large eyes, Relative brain size increasing compared to more primitive primates, brain expansion, refined opposable thumbs and big toes, nails, strong grasp for climbing and handling food, Smaller olfactory bulbs compared to Strepsirrhine, Flatter face, shorter snout, Dry nose with reduced scent-marking behavior, Teeth suited for a frugivorous (fruit-heavy) or insectivorous diet, More rounded molars, less sharp than those of Strepsirrhines. See more