These are fossils, living organisms (plants and animals) which have been preserved
by turning into rock. Not many plants and animals are lucky enough be turned into fossils,
Fossilization happens when the organism dies, the conditions are just right and the remains
are buried quickly. Some can be millions of years old and give us insight to extinct ancient
creatures and worlds. Out of the 3 rock types, fossils are found most commonly in
sedimentary rock as the conditions it forms do not destroy the remains”