Pirate Gold Coins Treasures of the Jurassic presents this Spectacualar Cave Bear Paw of museum quality! The Cave Bear (Ursus spelaeus) was wondering the earth between 300,000-100,000 Years Old during the Pleistocene Era. These bears stood in excess of 3 meters tall when they stood on their hind legs, making it easy to understand why our ancestors revered them. Most of these fossils were found in caves.