- Cleoniceras sp.
- Middle Cretaceous Age (Albian Stage – 150 Million Years Old)
- Republic of Madagascar – an island country in the Indian Ocean, off the coast of Southeast Africa.
- Specimen measures 2 3/16″ wide
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.