@farmerman,
I heard recently that, along the Cretaceous outcrops along the Western SHore of the Chesapeake, an archeological expedition turned up a Mid Cretaceous fossil from depths deeper than the archeo dig was concerned with.
Seems that Paleo Indians , dining along the PAtuxent, had dug up and used a Cretaceous dinos vertebra as a cooking pot. The vertebra had a spherical concavity where the interossicle "Pillows" lie and hook the vertebrae togetther . The notochord in above this segment so the concave segement was like a small pot. There we have a fossil dug up by Indians who then used ot for a pot (It was all covered with charring and had some stuff still stuck to its insides).
Then the Indians abandoned their camp and left it for about 9000 years when a bunch of archeologists, digging as part of a runway extension project near Dulles AP (Or whatever the hell they call it b=now) Kewl.