- Cleoniceras Ammonite
- Cretaceous Age
- Tulear, Madagascar
- The largest ammonite measures 3 5/16″ wide… The fiery iridescence is difficult to capture in photos, but is present.. this specimen retains its out shell which is hard to come by.. most are polished off in Madagascar!
Ammonites are an extinct group of marine invertebrate animals similar to the modern nautilus. (Cephalopoda) Like the nautilus, ammonites had a soft body with tentacles that emerged from a hollow chambered shell utilized in the manner of a submarine’s ballast tanks. Ammonites are often identified by their shell ornamentation and the structures of the wall that divide the shell’s chambers.