Charles Darwin worried that the fossil record looked strangely abrupt, with complex animals appearing in a geological instant ...

During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...

For decades, anthropologists lumped these ancient populations into a single species, Homo heidelbergensis, long believed to ...

The Moroccan fossils now provide tangible evidence from this mysterious transitional period. What makes these fossils particularly significant is the precision with which they can be dated. The ...

These radioactive elements decay at known rates, effectively acting as a built-in clock that reveals precisely when the eggs were buried millions of years ago. This natural timekeeping mechanism has ...

The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...