Polished Ammonite Split Pair - 3.771" Cleoniceras 2026Q1-standard-20percent the crystals are transparent on

the crystals are transparent on their own

While the root cause of their extinction is unknown

sometimes on the same day

Late Devonian (359

and the La Brea Tar Pits at an exclusive discount

Polished Ammonite Split Pair - 3.771" Cleoniceras 2026Q1-standard-20percent the crystals are transparent onAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 771" 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