| Size (Inches) | X-Small (.75") |
|---|
Check the listing for details. Opalized Ammonite Fossil. Condition: New. Listed at 7.00 USD. A beautiful example of the Fibonacci spiral exhibiting itself in nature, the Ammonite is a shelled nautilus that was part of a now extinct group of invertebrate marine animals. The Ammonite is a shelled nautilus that was part of a now extinct group of marine invertebrate mammals.