Learn how X-ray imaging revealed the first fossilized egg from a mammal ancestor, showing how Lystrosaurus reproduced 250 million years ago.

A fossil once believed to show the world’s oldest imprint of an octopus – some 300 million years old – is actually another ...

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Modern Nautilus and Allonautilus species inhabit deeper waters than their extinct ancestors did over 500 million years ago.

In 2000, researchers thought they found the oldest fossil octopus, which lived over 300 million years ago. But it may just be ...

At the end of the Paleocene and beginning of the Eocene epochs, between 59 to 51 million years ago, Earth experienced dramatic warming periods, both gradual periods stretching millions of years and ...