Nearly 100 million years ago, snakes weren’t the sleek, limbless creatures we know today—they still had hind legs and even a cheekbone that has almost vanished in modern species. A remarkably preserved fossil of Najash rionegrina from Argentina has reshaped how scientists think about snake origins,

The discovery of a collection of about 700 fossils known as the Jiangchuan Biota gives scientists a better understanding of the transition between the Precambrian supereon and the Phanerozoic, our current geologic eon.

For decades, a collection of fossil fragments sat forgotten in museum drawers — a paleontological "cold case" waiting for modern technology to crack it. Originally unearthed in 1986 by Dr. Mary Dawson,

A rare fossil discovery is shedding light on the “missing years” of early sponge evolution. Scientists found a 550-million-year-old sponge that likely lacked hard skeletal parts, explaining why earlier fossils are so scarce.

Oil seep hydrocarbons and oxygen-free mud protected not only bones but also delicate tissues such as skin and cartilage.

An amateur fossil hunter has found a rare fragment from the world's oldest marine crocodile during a guided walk along the Jurassic Coast. Heather Salt was taking part in a guided

Fossils from giant tortoises, armadillos and other Ice Age-era species challenge previous assumptions about the region’s ancient climate