The oldest known aquatic reptiles, the mesosaurs, probably spent part of their life on land, reveals a new study published in Frontiers in Ecology and Evolution. The fossilized bones of adult ...

It was here where the Mesosaurus lived 270 million years ago. It’s a challenge to get our human brains around this time period and to contemplate how these small creatures swam around, hundreds of ...

Pangea may have vanished 200 million years ago, but it left a trail of clues in rocks, fossils, and even magnetic fields that still stitch the continents together. From identical mountain belts to ...

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A comprehensive analysis of Mesosaurus fossils shows that bones from adults share similarities with land-dwelling animals -- suggesting older Mesosaurus were semi-aquatic, whereas the juveniles spent ...