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Extinct Animal Fossils refer to the preserved remains or impressions of animals that once lived on Earth but are no longer in existence. These fossils provide valuable information about the ancient species, their behavior, physiology, and environment. Scientists study these fossilized remains to understand the evolutionary history of life on Earth and the factors that led to the extinction of certain species. Extinct animal fossils can include bones, teeth, shells, tracks, and other traces of prehistoric organisms.