I went hunting with @minnbuckeye Monday and in another thread discussed a couple of Hipparion horse teeth I found.
We found lots of fossils. For example, here are 3 unusual ones. One is an Emmons fish tooth, only the 2nd that I have ever found, another a very rare Osteoderm from Pachyarmatherium_leiseyi, and then an oddly worn dolphin earbone (or at least shaped like a dolphin earbone). In this fossil ID thread, I am not trying to ID any of these.
Here is a bone to ID. On all 3 photos, you can see bone on bone wear patterns, which seems to imply this bone is almost complete , as opposed to being a broken fragment. Plus I had seen a similar bone and searching tracked down this bone from @Harry Pristis gallery:
http://www.thefossilforum.com/index.php?/gallery/image/39751-camel-fibula/
The bone below is 58 (compared to 43.7 in camel) x 48 x 35 mm. So, is this bone a fibula ?, and if so, which mammals have fibula like this size?
!!!