It has long been known that various amphibians, including frogs and toads, lived during this time, and even much further back ...

But did this remarkable life cycle already exist in their early days? Frog fossils are rare, and even rarer are those of tadpoles, those young amphibians vulnerable to predators and unstable aquatic ...

After a few weeks, the tadpoles grow little legs and their ... In time, these frogs will be able to lay their own frog spawn and their life cycle will begin again. But frogs aren't the only ...