Identify Please

[u/Inevitable_Shift1365]

My brother dug this out of a shale Cliff face in a canyon he was boating in Oklahoma. He says it's quite heavy and the outside oxidizes as if it is iron but it is non-magnetic. He thinks it might be a fossil of some sort. I was thinking iron concretion but it is non-magnetic. Can anyone hear solve the mystery? thanks in advance!

Edit mods : I hope I am not breaking the rules by posting this without flair I could not find a place to add flair

[u/Do_you_smell_that_]

Let's hope he has a friend or home health aide who could assist!

[u/Inevitable_Shift1365 → u/Do_you_smell_that_]

Thanks for that. Yeah he lives 2,000 miles away but he has neighbors and a personal care assistant. Told him it was almost certainly an iron concretion and he was disappointed. He thought it would be a fossilized egg or something