What are Fossils?
Fossils are the remnants of living organsims that existed thousands or millions of years ago. There is fossil evidence of bacterial life existing over 3 billion years ago.
These fossils may be just impressions or traces of activity (such as burrows and borings), they may be casts of original shells or they can be hard parts of the organism in various stages of alteration. Soft tissues are very rarely preserved, and even the preservation of the more resistant hard parts of an organism is a rare event.
The full extent of the scientific value of a fossil is not always realized immediately by the collector.
Preservation of the fossil, as little altered as possible, allows others in the future to study the specimens with new techniques, new ideas and compare them with additional specimens.
Examining the stable isotope composition of well preserved specimens can reveal aspects of the oceans they lived in and also their life histories.
We cannot predict when new techniques will be developed or when new specimens will be found so it is extremely important to preserve past collections for future use.
All sorts of creatures and “monsters” that are no longer around now tell us what life was once like.
So you never know when any specimen may become a critical key to solve a particular problem.
Or when a later researcher may want to check up on some earlier work.
Or when a new technique can be applied to the specimen.