(04-12-2016, 06:11 PM)Sounsyy Wrote: It has more to do with the hot sun leaving nothing but the bones of poor merchants who can't make the trek through the desert than it does with the amount of rainfall in the region.
That still suggests extreme desertification. Bone breaks down and decomposes just like everything else if it's exposed to enough moisture to foster bacterial growth while remaining exposed to the air. Fossils are generally formed because the body is covered completely (i.e. airtight/airless) by soil or other matter