We can’t go back in a time machine to ... Most of those marks are on fossils of hoofed animals, including a few deer; one is a small carnivore leg bone. When we could identify the type of ...

A “mystery bone” stumped rangers ... “a wolf or medium sized animal.” Several others guessed it came from some kind of prehistoric reptile like a snake, a T-Rex or a velociraptor.

don’t appear to have been shaped at random, but instead display a uniformity indicating a practiced methodology and strategy. “Excellent understanding of bone fracture mechanics is shown by ...