During the early Paleocene, about 66 to 56 million years ago, a species of small mammal known as Mixodectes pungens […] ...

A new review of Triassic fossils from Germany reveals rich tetrapod diversity and links to modern biodiversity and climate ...

But a recent study suggests that the timeline actually stretches further back — beyond the evolution of early humans and past the age of dinosaurs — to 200 to 300 million years ago when a hot ...

A deep-rooted population structure emerged, suggesting modern humans, Homo sapiens, are the result of a population that split in two about 1.5 million years ago, and then, only 300,000 years ago, ...

At least hundreds of millions of years old ... found in India were brought to the surface at least a billion years ago and perhaps longer ago. So we're comfortable saying that the Hope Diamond ...

A new study reveals the modern arid desert between Africa and Saudi Arabia was once regularly lush and green with rivers and ...

CHICAGO — As an ice sheet thousands of feet thick began its final crawling retreat from North America to the Arctic toward the end of the last glacial period some 10,000 years ago, it left ...