However over the past 200 years when the formal study of modern science took shape, many proofs and pieces of evidence indicate that this estimate may be incorrect.In fact the narrative of the sequence of events of the creation of the universe itself has come under scrutiny.The minerals precipitate out of the groundwater and fill the empty spaces,. Permineralization can produce very detailed fossils. For permineralization to occur, the organism must be covered by sediment soon after death or soon after the initial decaying process.The degree to which the remains are decayed when covered determines the later details of the fossil.One process of fossilzation is called Permineralization.This occurs after burial, as the spaces within the organism that were filled with liquid or gas during life become filled with mineral-rich water.If we study snakes living today we can get a good sense of how this ancient snake may have lived, how it attacked and ate its victims and who those victims were, like rabbits, lizards etc etc.
Fossils may also consist of marks left behind by an organism such as foot prints or the faeces.
Just like their living counterparts, fossils vary in age and size.
Fossil range in size from those of tiny bacteria to those of huge dinosaurs and mighty trees that once lived.
So in general, for an organism to be fossilized, the remains normally need to be covered by sediment as soon as possible.
However there are some exceptions to this, such as if an organism becomes frozen, desiccated, or comes to rest in an environment with low oxygen.