Fossil Bones? Help with online ID Resources

[Ed-D]

Thought I'd ask you smart people your opinion on these. They look like fossilized bones to me.

Also, what are some good online resources to help with identification?

Thanks.

 

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[Harry Pristis]

To determine whether or not they are bones, show us good close-ups of the cross-sections at the breaks.

 

[Ed-D]

To determine whether or not they are bones, show us good close-ups of the cross-sections at the breaks.

OK - I updated the original post to include two closeups of the rust colored one.

 

[Harry Pristis]

The image of the broken cross-section is out of focus. I'm leaning toward geofact for these things.