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 ...
The Spinosaurus thigh bone (left) was thin sectioned with a diamond saw (middle) to reveal under magnification its bone structure (right). Disclaimer: AAAS and EurekAlert! are not responsible for the ...
Can a skeleton be a storyteller? When it comes to dinosaur bones, the answer is yes — if you know how to listen! Prehistoric fossils are a wealth of critical scientific information. Everything from ...
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