Polished Ammonite Split Pair - 3.446" Cleoniceras glyptodon and following a succession of

and following a succession of name changes

This specimen is a complete Aterian tool as found in North Africa

But space is

The material was part of Apollo 8's thermal protection system

These creatures belonged to the Eurypterid order

Polished Ammonite Split Pair - 3.446" Cleoniceras glyptodon and following a succession ofAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 446" 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