A new amphibious fossil discovered in western Portugal has confirmed its presence in the former Jurassic wetlands.

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.

Newly discovered proto-amphibian, Kermitops (USNM PAL 407585) from the Department of Paleobiology collections at the Smithsonian Institution National Museum of Natural History. The species is named ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...