@gavvet, Thanks for posting long valuable discussion with steemians.
The modern use of the word ‘fossil’ refers to the physical evidence of former life from a period of time prior to recorded human history. This prehistoric evidence includes the fossilised remains of living organisms, impressions and moulds of their physical form, and marks/traces created in the sediment by their activities. There is no universally agreed age at which the evidence can be termed fossilised. This is long discussion and can be more pages talking.
There is nothing scarier than walking straight into a dragon's mountain den. And there is nothing more challenging than hiking in southern Africa's highest mountain range. However I really appreciated your work @gavvet.
Resteemed.