Dr. Chris Shelton and student Kolby Dooling unearthed a rare, well-preserved ammonite fossil at a site in Oklahoma, and it ...

A routine fossil-hunting trip turned into a groundbreaking discovery for a pair of researchers when they stumbled upon a rare ...

We now know ammonites are extinct cephalopod molluscs related to squids and octopuses, which lived in the seas of the Mesozoic Era between about 201 and 66 million years ago. Their shells are ...