[djf]

Also, the soil here is extremely acidic due to the evergreen trees. Bones in the wild simply do not last that long.

I’ve dug up like small bones and skulls from small animals doing gardening in my backyard (which 20 years ago was second growth forest) and ALL bones you find are in an advanced state of decomposition.

[ROCKLOBSTER]

I’ve dug up like small bones and skulls

It's odd that they were all the same.

from small animals doing gardening in my backyard

Now why were these small animals doing gardening in your backyard? And what killed them?