The discovery in Patagonia shows that frogs have had a tadpole stage for at least 160 million years. Here’s how the ancient frogs compare to those of today.

From reproductive rights to climate change to Big Tech, The Independent is on the ... Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when ...

An artist's impression of both Notobatrachus degiustoi adults and tadpoles. The giant frogs lived during the Jurassic Period, alongside the dinosaurs (as depicted in the background.) An artist's ...

At about a half-foot (16 centimetres) long, the tadpole is a younger version of an extinct giant frog. (The American bullfrog, the largest living frog in Canada , reaches a maximum of 20 ...