Sixty-five miles southwest of Chicago, a small hill that looks like a prop from an Indiana Jones movie breaks up the flat, ...

The rust-colored stone is split into two halves; on each half is an imprint of an extinct conifer leaf in exquisite ... family that has hunted and sold Mazon Creek fossils for 60 years.

On each half is an imprint of an extinct conifer leaf in exquisite detail ... is from a Morris family that has hunted and sold Mazon Creek fossils for 60 years. Wittry, a self-trained amateur ...

All over the world, well-preserved fossils and crystals are frequently been found inside these roughly spherical rocks. The Mazon Creek fossil beds in Illinois are famous for the concretions found ...

In 1969, researchers discovered beautifully preserved fossils of baby Bandringa sharks, as well as their spiral egg casings, along Mazon Creek in northeastern Illinois. The juvenile sharks ...

Tullimonstrum (also known as the Tully Monster), a 300m-year-old fossil discovered in the Mazon Creek fossil beds in Illinois, US, is one such creature. At first glance, Tully looks superficially ...

“The fossilization at Mazon Creek is really, really exceptional,” McCoy explains. “It’s interesting because the fossils are preserved inside concretions,” which are spherical rocks that ...

The cool thing about fossils is that you never know what you ... “Douglassarachne acanthopoda comes from the famous Mazon Creek locality in Illinois and is about 308 million years old.