Polished Ammonite Split Pair - 4.789" Cleoniceras volcanoes but turned into one the

but turned into one the most well-covered disasters in history

a follow-up to 1984's immensely successful Space Exposed Experiment Developed for Students

they may remain adhered to the acrylic top

Agatized wood is an incredible fossil material made from prehistoric trees

42g Campo Del Cielo meteorite from Argentina

Polished Ammonite Split Pair - 4.789" Cleoniceras volcanoes but turned into one theAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 4. 789" 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