Teeth are a good example as they are the hardest part in a vertebrate body, and they typically have the same composition in fossils as they do when they are in your mouth. Mummified fossils are also ...

Powerful X-ray scanning techniques ... spiny creature with a mouth but no anus. When it was discovered in 2017, it was reported that the tiny fossil of this sack-like marine beast could be ...

Researchers used powerful X-rays to scan the 520-million-year-old fossil. The results, published in the journal Nature, reveal its microscopic blood vessels and nervous system. It is a peek inside ...