GEOLOGY

Detailed explanation-1: -Trace fossils are marks left by an animal or plant that has made an impression. These fossils include nests, burrows, footprints or any other markings of the animal’s time on the earth. The structure of the animal or plant remains as a mineral form.

Detailed explanation-2: -Sometimes when an animal dies and its body decays, it can leave an imprint in the sediment. If this imprint fills in with minerals from sediment and groundwater, it can harden to form a fossil. This fossil is called a cast fossil. The fossilized imprint is called a mold fossil.

Detailed explanation-3: -Preserved evidence of the body parts of ancient animals, plants and other life forms are called ‘body fossils’. ‘Trace fossils’ are the evidence left by organisms in sediment, such as footprints, burrows and plant roots.

Detailed explanation-4: -FOSSIL MOLDS are created when the sediment hardens, and the dinosaur bones fully disintegrate, leaving open spaces where the bones once were. When Fossil molds are found, they can be filled and used to make many copies of the fossil!

Detailed explanation-5: -Common mold fossils include skin, leaves, teeth, claws and embryos.