Fossils of the ancient frog Notobatrachus degiustoi push the known tadpole timeline back more than 30 million years.

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.

as they had enough material to work with in order to establish traits the tadpole shared with baby frogs alive today. Plus, ...

“It's not only the oldest tadpole known, but also the most exquisitely preserved,” said study author Mariana Chuliver, a biologist at Buenos Aires’ Maimonides University. Researchers know frogs were ...

is the oldest tadpole ever found. By Asher Elbein The metamorphosis of a frog from baby to adult is one of nature’s most remarkable transformations. Tadpoles are born with oversized heads and ...

Maybe what we should have been asking is, "Which came first: the frog or... The oldest tadpole ever found is 161 million years old and amazingly preserved Frogs, like butterflies and salamanders ...

The researchers believe that N. degiustoi likely reached its giant size—which rivaled that of most anurans alive during the age of reptiles (251.9–66.0 million years ago)—as a result of having a long ...

Found in a rock in Argentina, the six-inch-long tadpole sheds light on the history of frog metamorphosis Alexa Robles-Gil Daily Correspondent An artist depicts the tadpole and frog individuals of ...

Call it a grand-phibian. Scientists have unearthed a fossil of the world’s oldest tadpole in Argentina — a shock finding that could alter our understanding of amphibian evolution, experts say.

A search for dinosaur fossils unintentionally shifted into a discovery of the oldest tadpole ever discovered when a team ...

Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to begin as tadpoles remains unclear. The oldest-known tadpole fossil found ...