Fossils are rare because their formation and discovery depend on chains of ecological and geological events that occur over deep time. Only a small fraction of the primates that have ever lived has ...

Add Yahoo as a preferred source to see more of our stories on Google. Brooklyn College Professor Stephen Chester (center) points out dental features on an enlarged model of an extinct mammal to ...

Sixty-six million years ago, a massive asteroid smashed into Earth. Life has undergone at least five mass extinctions in the ...

Tiny fossil teeth from Colorado are revealing new clues about the very first relatives of primates, including humans.

An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...

Tiny, tooth-sized fossils have just reshaped the story of our deepest ancestry. Paleontologists have discovered the southernmost remains ever found of Purgatorius—the earliest-known relative of all ...

New minuscule fossils of Purgatorius, the earliest-known relative of all primates—including humans—have been unearthed in a more southern region of North America than ever before, and the breakthrough ...

Three tiny Purgatorius teeth found in Colorado are helping scientists trace how early primates evolved and spread across North America.

Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

1. Introduction / Tracy L. Kivell, Pierre Lemelin, Brian G. Richmond, and Daniel Schmitt -- 2. On primitiveness, prehensility, and opposability of the primate hand : the contributions of Frederic Wood ...

Adaptation and behavior in the primate fossil record / Callum F. Ross ... [et al.] -- Functional morphology and in vivo bone strain patterns in the craniofacial region of primates: beware of ...

A few teeth, smaller than a grain of rice, are changing the map of your earliest primate relatives. They come from a creature called Purgatorius, a tiny tree-dwelling mammal that lived about 66 ...