The discovery of a 3-metre fossil tetrapod in the Ugab River valley in Namibia has undermined theories about the evolution of these ancient four-legged creatures. Basal tetrapods were animals at the ...

New discoveries of fossil clawed footprints from Australia, published in Nature, push the origin of reptiles back in time by at least 35 million years and change the entire timeline for the origin of ...

Ancient specimens of a previously undescribed species of four-limbed vertebrate fill a gap in the fossil record. The evidence offers surprises about where, when and how these ancestral relatives of ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American We’re all used to the idea that amazing ...

The origin of four-limbed animals known as tetrapods was thought to be fairly straightforward: Fish flopped onto land in the Devonian, evolved, and eventually diversified into the reptiles, birds, ...

An ancient species has had experts scratching their heads about its unusual jaw shape. The salamander-like creature had a highly unusual way of chewing its food. But this discovery was significant in ...

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