Explore 25 giant prehistoric ancestors of modern day animals! See colossal creatures like elephant-sized sloths and rhinos.

The ocean covers about 70% of Earth, and beneath the surface have lived some of the largest and most mysterious creatures to ...

Giant ancestors of modern-day kangaroos—which previous research has estimated could weigh up to 250 kilograms—may have been able to hop in short bursts, according to research published in Scientific ...

Giant ancestors of modern-day kangaroos — which previous research has estimated could weigh up to 250 kilograms — may have been able to hop in short bursts, according to research published in ...

For centuries, stories of the Nephilim — mysterious giants mentioned in the Bible — have fueled speculation about whether they were based on real beings. Now, an extraordinary discovery beneath the ...

Ancient anaconda fossils show that the snakes became giants soon after emerging in Miocene South America. Their size has stayed stable for over 12 million years, even though other huge reptiles went ...

A new statue in Agrinio honors Titormos, the legendary Aetolian giant celebrated in ancient Greek tradition as the "Second ...

Even the giant kangaroos that roamed Australia thousands of years ago might have been able to hop, according to a new analysis of bones. Some of the kangaroos living during the Pleistocene were more ...

Lightning-sparked wildfires killed thousands of giant sequoias this year, leading to a staggering two-year death toll that accounts for up to nearly a fifth of Earth's largest trees, officials said ...

At the time of the dinosaurs, the oceans were teeming with life. Below the waves, giant marine reptiles, such as the fearsome 4m (13ft) long mosasaurs, were the undisputed apex predators. In artistic ...