Polished Ammonite Split Pair - 3.556" Cleoniceras showcasejewelry2025saleall Originally featured in the Fourth

Originally featured in the Fourth Edition of the Mini Museum

the Triceratops’ teeth were nestled inside one another

Both black and brown background color choices are available

This specimen is a 11

~ Henry van Dyke

Polished Ammonite Split Pair - 3.556" Cleoniceras showcasejewelry2025saleall Originally featured in the FourthAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 556" 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