Fossils are an embodiment of the Earth's history and her inhabitants. Occurring when the biological matter of a plant, insect or animal is replaced by minerals within surrounding rock formations, fossils are life forms forever memorialized in stone. Representing the mysteries of the universe, fossils contain the life-force and vitality of past organisms. We have petrified wood, polished Orthoceras, Lycoptera, fossilized shark teeth, and more! Enliven your surroundings with a fossil, and bring a little yesteryear into your present. Nature's Treasures is your source for rocks, crystals, minerals, fossils, and more—shop our great selection today!