Polished Ammonite Split Pair - 3.307" Cleoniceras mm2 and Webb Deep Field

and Webb Deep Field

025" dinosaur gastrolith from the Morrison Formation in Colorado

recovered from the Skull Creek Quarry in Colorado

It dates to the Cambrian Period

rex had heavy

Polished Ammonite Split Pair - 3.307" Cleoniceras mm2 and Webb Deep FieldAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 307" 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