THEY ARE SORTED BY SIZE
fossilized shell
imprints gastroliths coproliths molds
A biostrome is a horizontally-bedded stratum of fossilized remains of sedentary organisms.
Rapidly buried by sediments
Dead organisms that were living million / billion/S of years ago.
Less than 1% of all organisms that die become fossilized.
An ancient, rainforest lateritic soil buried by basalt lava flows
Amber is fossilized tree resin, while most fossils are made from the remains of organisms.
Fossilized remains of single-celled organisms similar to modern bacteria have been found in rocks more than 1.5 billion years old. These fossils provide valuable insight into Earth's ancient environments and the evolution of early life forms.
It took many years of evolution for complex, multi-celled organisms to develop. Single celled organisms were the first that were around to be fossilized.
an animal that got fossilized
It is dung that has become fossilized.