This virtual reconstruction shows the position of a fossil in a burial pit. The toddler was laid to rest 78,000 years ago on a pillow in a cave in eastern Kenya. This is thought to be the oldest human burial ever found in Africa.
This is a skeletal mount of Homotherium serum from Friesenhahn Cave, on display in the Texas Memorial Museum in Austin.
This is the second lower molar of a modern human found in Bacho Kiro Cave in Bulgaria that was associated with tools from Initial Upper Palaeolithic about 45,000 years ago.
This photo captures the Ewass Oldupa archeological site in the Oldupai Gorge, Tanzania. Stone tools that date back 2 million years ago were recently uncovered at the site.
This image shows the Cook House (right) and the Earthwatch roundhouse reconstructions (left) prior to their dismantling and excavation at the Castell Henllys Iron Age site in Wales.
This is an artist's illustration of Adalatherium hui, an early mammal that lived on Madagascar 66 million years ago.
This artist's illustration shows Triceratops and juvenile tyrannosaurs facing off near the end of the Cretaceous Period 67 million years ago.
This mastodon fossil is on display at the American Museum of Natural History. A new study using mastodon DNA has suggested the animals migrated many times across North America during fluctuations in climate and environment.
A titanosaurian sauropod hatchling was found inside a dinosaur egg from 80 million years ago and its embryonic skull was still preserved.
This artist's illustration shows a young Purussaurus attacking a ground sloth in Amazonia 13 million years ago.
This bundle of bones is the torso of another marine reptile inside the stomach of a fossilized ichthyosaur from 240 million years ago.
Researchers uncovered the fossilized fragments of 200,000-year-old grass bedding in South Africa's Border Cave.
Meet Sasha, the preserved and reconstructed remains of a baby woolly rhinoceros named that was discovered in Siberia.
Stone tools made from limestone have helped researchers to suggest that humans arrived in North America as early as 30,000 years ago.
This image shows both sides of the 1.4 million-year-old bone handaxe made from the femur of a hippopotamus. It was most likely crafted by ancient human ancestors like Homo erectus.
This illustration shows Kongonaphon kely, a newly described reptile that was an early ancestor of dinosaurs and pterosaurs. The fossil was found in Madagascar. It lived about 237 million years ago.