NEW YORK (AP) — Scientists have discovered the oldest-known fossil of a giant tadpole that wriggled around over 160 million ...

“It’s not only the oldest tadpole known, but also the most exquisitely preserved,” said study author Mariana Chuliver, a ...

An ancient tadpole fossil, the oldest ever found, was recently unearthed in Argentina, providing insights into the evolution of modern frogs.

A fossil of a tadpole from Argentina is 161 million years old - and isn't that different from some modern species ...

A 161 million-year-old fossil, linked to a line of extinct frog-like amphibians, is the oldest tadpole ever found.

"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 ...

The fossilization of the tadpole's "delicate structures," like its eyes and gills, allowed for a detailed analysis of the ...

Scientists have unearthed a fossil of the world’s oldest tadpole in Argentina — a shock finding that could alter our ...

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 ...

Among them was a tadpole fossil in a sandstone slab. Evolutionary biologist Mariana Chuliver at the Félix de Azara Natural History Foundation in Buenos Aires and her colleagues identified the fossil ...

“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 ...

In the new study, the team describes this well-preserved fossil tadpole. It belongs to the species Notobatrachus degiustoi and dates back about 168 to 161 million years to the Middle Jurassic. Most ...