Here’s an interesting one. I docent at the Page Museum at the La Brea Tar Pits, and while I was talking to some visitors one of them gave me a piece of bone fragment his father found (among many other easier to identify pieces) at the tar pits before the museum was created. I have showed to some of the researchers at la Brea, and their guess was that it was a tibia fragment from some mammal. So far based on my own comparisons, it seems closest to a dire wolf, but if anyone else has any other ideas, I’d love to hear them.
Thanks!