Here is a mystery nobody wants to touch. In a riverbed in Paluxy, Texas, archaeologists have found both dinosaur tracks and human footprints together. Both made at the same time. And, not just one track, but dozens. All the tracks are the same age, about 140 million years old, and they were made together.
petrified finger found in cretaceous limestone. Sectioning reveals the typical porous bone structure expected in a human finger. Cat-scan and MRI identified joints and traced tendons throughout the length of the fossil.