the wooden artefact was most likely touched with bare hands or stood around in a museum gathering (recent!) dust! Been there, seen that - a friend of mine got into troubles because he wanted to date artefacts from a cave around here and found that it was not possible as they had been in the museum collection for over 80 years and the dates were BS 
also, as I said, being Leaky finds they were probably surfcae findss, not burried in hard rock. But even in rock you will have animal burrows - which can contain bones. Imagine a Fenek carrying off a piece of a carcass into his den....... Often, burrow structures get overlook - you ahve to know what to look for to see the difference! So things in the former, now collapsaed burrow get assigned to the same strat as thing that ORIGINALLY were in the rock....

also, as I said, being Leaky finds they were probably surfcae findss, not burried in hard rock. But even in rock you will have animal burrows - which can contain bones. Imagine a Fenek carrying off a piece of a carcass into his den....... Often, burrow structures get overlook - you ahve to know what to look for to see the difference! So things in the former, now collapsaed burrow get assigned to the same strat as thing that ORIGINALLY were in the rock....

so you don't hurt yourself.

)
? The biblical creation story is not much detailed on how God created the world. It says that God created the first living beings, but from then on it indicates that ToE must be true. Noah could not have millions of creatures in his little boat so, if you take the bible literally, the rest must come from somewhere else, like evolution.