A stone slab barely half a meter wide is shaking the foundations of evolutionary science. Embedded in the slab’s fine sandstone are delicate imprints: long toes ending in sharp claws, left by an ...

“I’m stunned,” Per Ahlberg, a paleontologist at Uppsala University in Sweden who coordinated the study, said in a statement. “A single track-bearing slab, which one person can lift, calls into ...

"I'm stunned." says Per Ahlberg of Uppsala University, who coordinated the study; "A single track-bearing slab, which one person can lift, calls into question everything we thought we knew about when ...

Seven stem tetrapod fossils, including the Westlothiana lizziae, have been found there. Hundreds of millions of years ago, when these early four-legged creatures roamed, this site was a tropical ...

(CNN) — Distinct clawed footprints found on a slab of 356 million-year-old rock from Australia suggest that reptile relatives appeared between 35 million and 40 million years earlier than previously ...

In 1984, an amateur paleontologist in Scotland found a remarkable specimen: a nearly complete fossil of what looked to be a lizard or salamander. Rather small in size at 20 centimeters, it would turn ...