Howlers are New World monkeys found in tropical Central and South America. They are aptly named for their cacophonous cries. When a number of howlers let loose their lungs in concert, often at ...

Once found in the jungles of Africa, researchers in South America have now discovered links tying these extinct primates to the continent—painting an incredible story of survival against the odds.

For instance, has evolution proceeded differently in New World monkeys versus Old World monkeys? New World monkeys last shared a common ancestor with Old World monkeys about 30-50 mya, but the ...