Need help identifying please

[Stoned Ninja]

I have a ton of inherited artifacts and fossils that I don't know much about. My parents died 11 hrs apart as a result of COVID 2 years ago this month and left a ton of stuff like this. I know very little any help is much appreciated. Thanks in advance. Found around east Texas area.

 

[giuhalftrack]

seams more a concretion around a piece of metal. test with a magnet, if sticks there is metal inside. if not it is a concretion of other type.