Evidence in the Fossil Record With every new fossil discovery, our understanding of the environment in a particular time becomes richer. The fossil record helps paleontologists, archaeologists, and geologists place important events and species in the appropriate geologic era. It provides important historical data for analyzing the long-term ecological impacts. The rock sequences prove that the bottom layers are older than the top layers. Therefore, some discovered fossils can be dated according to the strata, a distinct layer of rock, that they are found in. IN Class, you will enjoy making your own yummy fossil edible sample and write your lab report after. Materials List 2-3 Clear medium cups Spoons Oreo chocolate cookies Plain tea biscuits Marshmallow Gummy M&Ms (big sizes) dinosaurs or other animals and/or raisins Nuts Fruit slices Jam or honey Whipped Cookie cream (if possible) decorating sprinkles (if possible)