Rare fossil finds show colossal octopuses were among the top ocean predators during the Cretaceous Period, according to a new ...

Dinosaur eggs filled with giant crystals are found in China, revealing new clues about prehistoric development.

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The fossilized remains of a Lystrosaurus now answers the question scientists have asked for years: Did mammals once lay eggs?

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 ...