[oldcats]

Plus, not every animal nor plant leaves a fossil. Fossilization of a body...beit animal or plant is a relatively rare happening.
If it wasn't, we wouldn't have oil, now would we?
Oldcats

[VadeRetro]

Hardly any fossilize, really. Most get eaten, the chunks rotting to pieces. Swamps and shallow inland lakes are best because they have these anoxic bottoms that silt up. A dead thing that sinks into that is not attacked by the usual suspects before it can be buried.