Spiders are not well represented in the fossil record. Their soft external skeletons don't typically preserve well -- except at a few exceptional sites around the world. There is one remarkable spot ...

Researchers discovered a 520-million-year-old fossil of an arthropod named Youti yuanshi that still had its brain and guts ...

During the course of evolution, the mammalian cranio-mandibular secondary joint—formed by the dentary condyle and the ...

A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth ...

In a world that looked nothing like today’s, long before the rise of the dinosaurs or even the first trees, giant living towers stretched skyward from the Earth’s surface. Some reached heights of 26 ...

A newly discovered fossil in Mongolia’s Gobi Desert has revealed the oldest and most complete pachycephalosaur ever found, ...