A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs ...

It turns out that preservation of these structures is widespread, confirming the ancient origin of this type of circulatory ...

Researchers uncover a new tegu species from a fossil vertebra in Florida, revealing ancient lizards once roamed North America ...

Deep inside a remote cave system, nearly three miles from the entrance, we stumbled upon something incredible – the fossilized remains of an ancient snake. In this video, we take you through the ...

Fossilization favors larger, protein-rich animals because they create oxygen-poor conditions that slow decay, helping explain ...

Before humans ever appeared and not long after the dinosaurs went extinct, a new giant rose to the top of the food chain. It didn’t fly or roar– it slithered, and it did so with incredible ...

Instead, the study suggests, Deinosuchus belonged to an ancient lineage that split off ... that the new placement makes sense as Deinosuchus fossils show an array of traits seen in alligators ...

A long time ago, strange predators roamed the Caribbean — not just birds and snakes, but land-dwelling crocodiles that ...

Why do some ancient animals become fossils while others disappear without a trace? A new study from the University of ...

This lineage of terrestrial crocs, called sebecids, lasted longer than previously believed, according to researchers who described fossils recently unearthed in the Dominican Republic that reveal ...

The prevailing theory suggested that elapoid snakes evolved in Africa, with the earliest fossil evidence dating back 25 million years. This belief was supported by the discovery of ancient African ...

For thousands of years, an ancient remnant of Australia’s history ... Clarke has delighted in beachcombing for fossils, but Sunday’s find is the most intact crustacean she's picked up.