- Ammonite – Unknown Species
- Cretaceous Age
- Ambatolafia, Mahajanga Province, Madagascar
- This specimen measures approx. 8.25″ wide. This specimen exhibits large areas of red iridescence that is difficult to photograph.. see photos.
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.