Children in the distant past were put to work early, reveal footprints.
Until this discovery, theropod dinosaurs were thought to be considerably smaller, at three to five metres in body length, during the Early Jurassic.
Latest development in 'Crete feet' find serves as a reminder of the challenges facing dig sites.
Experts are intrigued by 5.7m-year-old footprints from Crete but argue we cannot yet know for sure whether they come from a human ancestor.
A new study can't rule out the possibility that human ancestors lived on Crete at the same time as they evolved in Africa.
The footprints of dinosaurs can tell a lot about how they moved about many millions of years ago.
A set of fossils that lay forgotten in a museum are revealing new secrets about Britain's prehistoric wildlife.
How to solve mysteries with an accessible computer program.