Biologists group animals with similar traits into broad categories called orders. Despite their similarities, animal species in the same order can have very different average lifespans. One of the ...

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 ...

A surprising new study suggests the earliest primates didn't originate in tropical forests but in cold, dry parts of North America. Some may have even survived seasonal Arctic conditions by slowing ...

Adaptation, evolution, and systematics -- The primate body -- Primate lives -- Prosimians -- New World anthropoids -- Old World monkeys -- Apes and humans -- Primate ...

You might find the lemur mongoose in Madagascar and the raccoon in the deciduous forests of North America, but they have one important thing in common: both species spend a lot of time climbing trees.

Saliva is a bodily fluid most of us take for granted despite the significant roles it plays: aiding in digestion, maintaining strong teeth and defending against oral disease. However, the evolution of ...