Bones? What bones?
I've been in construction a long time. We have dug up a lot of things in mass excavations. There is an unmentioned understanding on a commercial construction site. We don't find bones, fossils or artifacts. We have found Model A wheels and tires, soap dish clay bricks, part of an old pisol, a house, part of a boat, etc.
We don't find bones, of any species, ever, no matter what.