86MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA Lygodium Kaulfussii mineralized outer shell—the first known

mineralized outer shell—the first known skeletal structure in animals

and fossil collections that value both beauty and deep-time history

transparent wings

People have used calcite to make cement and mortar

typically small to medium-sized feathered carnivores that thrived during the Cretaceous Period

86MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA Lygodium Kaulfussii mineralized outer shell—the first knownLocation: Near Sakaraha, Tulear Province, Madagascar Weight: 6. 5 Ounces Dimensions: 86MM 3. 4 inches long, 2. 9 inches wide, 1 inch thick Comes with a Certificate of Authenticity. The items pictured are the ones you will receive. Perisphinctes Ammonite Perisphinctes ammonite exemplifies the taxonomic diversity of Jurassic cephalopods. As members of the subclass Ammonoidea, these organisms occupied critical ecological niches in marine food webs from