The tuatara, a reptile native to New Zealand, looks like a lizard but belongs to a completely different evolutionary branch.

The discovery suggests that reptiles originated in the Devonian, and survived the mass extinctions at its end.

A newfound treasure trove of ancient fish fossils unearthed in southern China is opening a window into the earliest history of jawed vertebrates — a group that encompasses 99 percent of all ...

Scientists have long puzzled over the gap in the fossil record that would explain the evolution of invertebrates to vertebrates. Vertebrates, including fishes, amphibians, reptiles, birds ...

The ancient footprints from Australia were found on a slab of sandstone recovered near Melbourne and show reptile-like feet ...

A fossil analysis suggests that the yunnanozoan, a wormlike fish that flourished around 520 million years ago, sported structures that were the precursors of the head and jaws of modern vertebrates.

Scientists in Australia have unearthed the oldest known fossil footprints of a reptile-like creature, pushing back the ...