Paleontologists have often determined how old a dinosaur was by counting the growth rings in its bones. Just like with trees, ...

Whether your child is deep in a dino phase or just curious about these prehistoric giants, there’s a book out there to spark their curiosity. From adorable picture books for preschoolers to thrilling ...

“It’s easy to get me excited about anything related to fossils,” says Amy Atwater. That’s a pretty good quality to have when you’re the director of paleontology at Dinosaur Ridge in Morrison – and ...

Until now, estimating how old a dinosaur was when it died has been a fairly simple process — just count up the growth rings in its fossilized bones. "We always thought that those rings were formed ...

Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted to accurately gauge the age of these reptiles? Is this also an accurate ...

A nearly complete 90-million-year-old dinosaur fossil from Patagonia, Alnashetri, reveals how alvarezsaurs evolved and shrank over time.