HQRP-Crystal 2.9" Polished Sand Dollar Fossil Petrified Sea Oursin Stone Prehistoric Jurassic Scutella Natural Urchin Mineral Clypeaster Convexus Stone - Madagascar You will receive exactly this Sand Dollar Fossil - 73mm x 24mm / 2 7/8 x 15/16 Inches; 135g / 4.8 oz (see photo, stand not included)! Sand dollar (Echinarachnius parma) is the ancient crustacean of order Clypeasteroida. The related marine animals include sea cucumbers, sea urchins and starfish. The ancestors of sand dollars were discovered in the fossil belonging to early Jurassic Period. But the first true sand dollar genus belongs to the Paleocene Era. The modern-looking groups of the genus emerged during the Eocene Period (55 to 40 million years ago). The seabed is the perfect environment for fossilization, and this is why so many marine creatures became fossils. When the marine creature dies, it slowly descends to the seabed, where it is buried under sand, mud and other remnants that fall from upper water layers. The remnants decompose, leaving the skeleton only, and the high water pressure of the seabed turns the sediments around it into rock. Scutella fossils are well-known as "sand dollars" for their extremely flattened radial skeleton shape, reminding a disk or a coin. Metaphysical practitioners believe that "sand dollar" increases the inner strength and bravery, helps in making decisions and contributes to success. Millions of years latter, due to geological processes, the fossil-containing rock is brought up to the surface and exposed to discovery by rain and wind. (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)