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Fossils

Across
the remains of the activity of an animal, such as preserved trackways, footprints, fossilized egg shells, and nests.
Preserved remains of plants or animals.
Genus Elrathia is commonly known as
Down
Class Asteroidea is today's _____
the most common type of fossil found across the world. They are formed from the remains of dead animals and plants.
This method of preservation occurs when organisms such as peat bogs containing fern roots, cones, stumps and stems, limy shells, sand dollars, mollusk shells and plant remains, lie in the ground for many years in areas rich with highly concentrated tannic acid.