Crack open Illinois’ prehistoric past at this hidden fossil spot, where ordinary rocks can reveal 300-million-year-old ...

Add Yahoo as a preferred source to see more of our stories on Google. CHICAGO — Sixty-five miles southwest of Chicago, a small hill that looks like a prop from an Indiana Jones movie breaks up the ...

A 300-million-year-old tentacled sea creature has lost its crown as the world’s oldest octopus, after scientists found evidence that it’s not an octopus at all.

The Mazon Creek fossil beds are renowned for their exceptional preservation of both plants and animals, made possible by their unique geological setting. The fossils are encased in siderite—an iron ...

Sixty-five miles southwest of Chicago, a small hill that looks like a prop from an Indiana Jones movie breaks up the flat, monotone landscape. Consisting of shale, sandstone and rocks from an old coal ...