Tenontosaurus fossils found in West Texas, the southernmost record of the dinosaur and a key to the Early Cretaceous.

Fossilization is a fickle process. Many fossils are fragmented, scattered (often broken) bones turned slowly to stone over millions of years. When most organisms die, their tissues are exposed to the ...

Longtime fossil collector Barry Norbeck donated thousands of shells and other invertebrate fossils to the Calvert Marine ...

The fossil leech compared with a modern leech. Double arrows indicate the large caudal sucker used for attachment, single arrows indicate body annulations. A newly described fossil reveals that ...

A newly described fossil reveals that leeches are at least 200 million years older than scientists previously thought, and that their earliest ancestors may have feasted not on blood, but on smaller ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth.

The fossil’s internal organs are almost perfectly preserved, providing researchers with rare insight into the early ancestors of today’s arthropods Arthropods include modern-day animals like crabs, ...

Dating from the late Cretaceous period, and discovered in the US state of South Dakota, Spike is a rare species of dinosaur ...

Scientists have discovered a rare, 520-million-year-old fossil with a highly unusual detail: its internal organs are preserved. The findings were published in Nature, a peer-reviewed scientific ...