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

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

A professor and a student from RSU unearthed a rare exceptionally preserved fossil gemstone. Professor Dr. Chris Shelton and ...

According to the American Gem Trade Association, ammolite is one of the world’s rarest gemstones ... and offers superb color and an incredible matrix in both size and shape,” says Heritage.