86MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA Sea Scorpion and served as key indicators

and served as key indicators of early marine ecosystems

as well as their interactions with surrounding fauna

and still others have postulated that it was used to trap air so the dinosaur could make sounds

ammonoids are more closely related to octopi

The colorful appearance of many seashells reflects the natural properties of aragonite

86MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA Sea Scorpion and served as key indicatorsLocation: 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