Cretaceous North Carolina turtle shell with preserved keratin plate, and mystery bone, maybe croc?

[fossil_lover_2277]

Hi all, two IDs here. Both are from North Carolina’s Cretaceous Black Creek group. The first is a small piece of turtle carapace. My question is, does this piece of turtle shell also preserve the keratinous plate that layers over top of a turtle’s carapace? I’ve never seen one fossilized before.

 

The second specimen is a bone fragment. My only question with it is what could have bones with this much cancellous/trabecular bone? I haven’t collected something this porous before, it’s new to me. I’m thinking reptile, maybe croc or turtle? Not hoping for any ID beyond that with this fragment. Any help is appreciated, and thanks!

 

turtle shell:

 

 

bone fragment:

 

 

Edited December 2, 2021 by fossil_lover_2277

[Rockwood]

I don't think that is a preserved keratin layer. It is more likely bone.

There is not likely to be any way of telling much more about the bone chunk. There are many animals that were big enough to qualify.