New findings are helping archaeologists clarify what we know about ancient South American civilizations.

This ancient creature preyed on amphibians and some of the first land herbivores that walked the Earth.

A prehistoric species that looked like a bizarre fusion between a crocodile and an armadillo populated parts of South America during the Late Cretaceous. Here's everything you need to know about Armadillosuchus arrudai.

Much like most other reptiles, dinosaurs reproduced by laying eggs. Here are five of the largest nest clutches and hatcheries that paleontologists have unearthed from the fossil record.

Why did the Aztecs sacrifice humans to the gods? Learn more about what this ritual served, along with other purposes.

Researchers suggests this bumblebee strategy may be an important way to limit infection in bee nests.

Humans have left evidence of their passing through America’s great rift for more than 10 millennia.

Ritual circles — like the ancient stone plaza found in Peru's Cajamarca Valley — date back as far as 5,000 years ago. Researchers are digging into these sites to learn more about the Andean cultures that created them.