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

Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. An Olorotitan dinosaur fossil with fractured tail vertebrae has resurrected a theory around how dinosaurs mated. Stocktrek Images, ...

Naming gifts are a part of almost all capital campaigns, but a new effort in Pittsburgh is drawing small gifts as well as large ones. The Carnegie Museum of Natural History, which is trying to wrap up ...

Until now, estimating how old a dinosaur was when it died has been a fairly simple process: Count up the growth rings in the fossilized bones. But... Searching for dinosaur secrets in crocodile bones ...