Interesting Idaho Fossilized Bone?

[Ted Goodier]

Can anyone confirm if the is fossilized bone or simple an unusual stone?  I am clueless on fossils so I will try to be as specific as I can and have included a measuring tape in photos (just over 5" long x 2.25" around at widest) and the items weight (14.6 oz).  The history is totally unknown to me.  I saved this from being tossed in the garbage so I am assuming it came from the local area (SE Idaho near Idaho Falls), but that is just my guess. I have made no attempt to clean the item as I do not wish to damage it in anyway.  This thing has significant heft for it's size and weights about as much as a can of beer.  Several sections show porous areas very similar to a bone's marrow.  I would like to know if this is truly bone and if someone has a clue as to what type of creature it may have come from. 7 Full sized photos may be viewed at the following link https://1drv.ms/f/s!ArHBEK85krjphGEJ4rCtBFIZXHFR

 

Thank You in Advance for any assistance and insight you may be able to provide.

 

[ynot]

Welcome to TFF!!

 

Sorry but it is not a bone.

It is a suggestive looking piece of quartzite. (possibly agate)

 

Tony

[Troodon]

Welcome to the forum.  Sorry have to agree with ynot it's not a bone.

[Rockwood]

If the side in that center photo was exposed I bet most of us would have picked it up for a closer look though.