A wounded T. rex left behind microscopic traces of its healing blood vessels—now revealing secrets of dinosaur survival 66 million years later. Credit: Shutterstock Despite decades of effort, scientists have never recovered dinosaur DNA. Most paleontology research today still focuses on searching for traces of original organic material in fossils, but DNA has not survived the passage of time. Much of what we understand about dinosaurs comes from fossilized bones and teeth. These durable remains

Tag-uri: DNA