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

Darwin Glass (Tektite)

These creatures were some of the most evolutionarily advanced members of the phytosaur family

they come with individual certificates of authenticity as well as the small stands you see pictured

16-18": The top chain measures 16 inches (~40cm) and the bottom chain measures 18 inches (~46cm)

Featured in the Fourth Edition of the Mini Museum

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