Polished Ammonite Split Pair - 3.913" Cleoniceras fossilrockcrystal Darwin Glass (Tektite)

Darwin Glass (Tektite)

63" polished Cleoniceras fossil from Madagascar

in an area referred to as "Doggerland

Featured in the Fourth Edition of the Mini Museum

glass-topped riker display boxes

Polished Ammonite Split Pair - 3.913" Cleoniceras fossilrockcrystal Darwin Glass (Tektite)Ammonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 913" 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