This is an odd fossil that was given to me by a friend who has been a fossil and rock collector and seller for years. It was in a misc. box of fossils. He said it was baculite, but he didn't have his glasses on, so I'm not sure if he could clearly see it. The overall shape is right, but I question if it is actually baculite because it doesn't have any of the tell-tale signs on the outside like baculites many times do - shiny surfaces, puzzle-piece looking sections, etc. I can't really see much of any identifying marks on it at all.
It has a few marks on the outside (and a few in the inside) that look like branching veins or something, but I can't tell what they would be.
I really have no idea where this fossil originated from.
Any ideas?