NEW YORK -- A fossil find in Argentina has revealed a two-legged creature that's the most primitive snake known, a discovery that promises to fire up the scientific debate about whether snakes evolved ...

New research has uncovered a species of hook-toothed lizard that lived about 167 million years ago and has a confusing set of features seen in snakes and geckos—two very distant relatives. One of the ...

Discovered in a German museum but potentially smuggled from Brazil, this lizard fossil ignited fierce debates over scientific ethics, fossil trade, and the global ownership of natural history.

This ancient, leg-bearing snake is rewriting the story of how serpents slithered, and sometimes walked, their way through evolutionary history.

Pythons and anacondas are undeniably massive snakes, capable of reaching lengths and girths that make them some of the heaviest reptiles alive today. But even these modern giants pale in comparison to ...

A 167-million-year-old fossil discovered on the Isle of Skye in Scotland is shaking up the way scientists think about the origins of snakes. The reptile, Breugnathair elgolensis, doesn’t quite fit ...

The fossil record of squamates, encompassing both lizards and snakes, provides an intricate account of evolutionary innovation over millions of years. Fossils elucidate key morphological transitions, ...

The global fossil record of squamates, which includes lizards, mosasaurs, snakes, and amphisbaenians (A) is overwhelmingly incomplete, with most fossil species containing less than 20% of the totality ...

NEW YORK — A fossil find in Argentina has revealed a two-legged creature that’s the most primitive snake known, a discovery that promises to fire up the scientific debate about whether snakes evolved ...