91MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA dup-review-publication consistent with ambush predation in

consistent with ambush predation in shallow water environments

Cambrian ecosystems

Large eyes indicate sharp vision

Fossil nesting sites indicate that Hypacrosaurus produced large clutches of eggs

Etherellidae (Permian)

91MM Perisphinctes Ammonite Fossil Nautilus Madagascar Jurassic Age COA dup-review-publication consistent with ambush predation inLocation: Near Sakaraha, Tulear Province, Madagascar Weight: 8. 3 Ounces Dimensions: 91MM 3. 6 inches long, 3. 4 inches wide, 1. 1 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