Fossils By: Kendra S. and Renz B.
They are made when a hard part such as a shell, fills up with sediments that harden, and then the actual shell dissolves leaving only sediment mold.
Trace fossils are things like footprints or animal droppings, which can tell us about the animal's behavior.
The sort of fossilization occured when the insect was enveloped in the liquid sap from a tree.
Cast fossils form when a mold is filled in.