Polished Ammonite Split Pair - 3.280" Cleoniceras showcasejewelry2025saleall During the Devonian period

During the Devonian period

Each specimen comes with a photo card that also contains authenticity information on the back

These tektites were launched over 150 square miles and were eventually collected and traded by early human societies

With scales or fluffy like a baby chick

with evidence that migration was limited at the time

Polished Ammonite Split Pair - 3.280" Cleoniceras showcasejewelry2025saleall During the Devonian periodAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 280" polished Cleoniceras fossil from Madagascar. The fossil has been split into a paired set to showcase the beautiful internal chambers of the shell. These internal chambers are called septa and the ammonite could fill them with air in order to float through the ocean like a balloon. After millions of years, they are now