Chicago, a small hill that looks like a prop from an Indiana Jones contains many of the world’s best-preserved, most diverse ...

including impressions left behind by prehistoric birds, mammals, lizards and invertebrates. The team's research, recently published in the peer-reiewed Palaeontologia Electronica journal ...

The four sets of impressions discovered at the John Day Fossil Beds included: Birds and invertebrates (approximately 50 million to 39 million years old): Two small bird tracks and beak marks were ...

Trilobites were prehistoric marine invertebrates with distinctive exoskeletons on their backs that lived in sediment, on the sea floor or in open water. They appeared 520 million years ago and ...

However, when they compared Anatolepis to a confirmed fossil arthropod—an invertebrate like the insects, spiders and crustaceans of today—they concluded that they’d been mistaken.

Initially interested in fossil invertebrates, especially ammonites, Hirsch shifted to fossil eggshells after discovering some with his wife, Hildegard, in the Willwood Formation of Wyoming. Unable to ...

Discovered by a private fossil hunter on a historic coastal ... skeletal remains of two crinoids — small, tentacled marine invertebrates, better known as sea lilies — coiled together in ...

This collection of trace fossils are between 29 to 50 million years old and give additional context to behavior of prehistoric birds, invertebrates, lizards, and mammals. Conner Bennett ...