87MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA Triceratops Throughout the nineteenth century

Throughout the nineteenth century

This allowed organisms to be preserved in extraordinary detail within thin sediment layers

often forming octahedral or cubic shapes

approximately 33 to 55 million years ago

capitalizing on the animal's robust bony armor for protection against harsh climatic conditions

87MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA Triceratops Throughout the nineteenth centuryLocation: Near Sakaraha, Tulear Province, Madagascar Weight: 6 Ounces Dimensions: 87MM 3. 5 inches long, 2. 9 inches wide, 0. 9 inches 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