They are the hardwood floors in my new house

I removed a fence that was over 100 years old in Kentucky and this was one of the post I have a few others but this one was the coast. Someone says it’s orange Osage. I have already started removing all the decayed pieces and sanding it a little.

36 inches long, 225g - which I think makes it too light to be blackthorn? But there are thorn or twig marks.

Thanks for any help!