Taxonomy term

south america

Monkeys in the New World earlier than thought

Monkeys originated in Africa, but how and when they first appeared in Central and South America has long been something of a mystery. Now, a new set of fossilized teeth places monkeys in South America about 10 million years earlier than previously thought.

 
07 Jun 2015

Slab tear explains perplexing Colombian earthquake activity

Colombia sits atop a restless intersection of tectonic plates: The Caribbean Plate is subducting along the country’s northern coast while the oceanic Nazca Plate subducts along its western edge. In between, the narrow but buoyant Isthmus of Panama continues to crash into South America like a battering ram. The complex pattern of earthquake activity produced by these disparate forces has long confounded scientists hoping to decipher the plate structure beneath Colombia.

08 Nov 2013