The lack of oxygen will slow your decay, giving you more time to fossilize.

If you can get buried someplace with little to no oxygen,like a bog or a deep lake bottom,even better.That lack of oxygen will slow down your decay and give you more time to fossilize.So, let's say you're lucky enough to die and get buried in a shallow sea under muddy, sandy sediments.What's your next move?One option is a process called permineralization.While all your soft parts decay away,your bones get saturated with mineral-rich waters.Bit by bit, microscopic crystals precipitate out of these waters to fill in the empty spaces and pores in your bones.