More mammals were living on the ground several million years before the mass extinction event that wiped out the dinosaurs, ...

The revived organisms resumed their biological activities as if they hadn't been without oxygen and light for thousands of ...

The discovery of a 480-million-year-old sponge in China has revolutionized scientists’ understanding of early reef ecosystems ...

Prototaxites fossils continue to divide scientists. These 400-million-year-old structures may belong to a completely extinct ...