Polished Ammonite Split Pair - 3.446" Cleoniceras glyptodon The material was part of

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

and following a succession of name changes

Growing as long as a school bus with a set of natural bony armor

Thousands of schools around the United States received packets like this to gather data and reported that once planted

Otodus obliquus was the first of these giant ocean predators

Polished Ammonite Split Pair - 3.446" Cleoniceras glyptodon The material was part 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