Polished Ammonite Split Pair - 4.938" Cleoniceras roman "Ceramic insulation/multifoil composite for thermal

"Ceramic insulation/multifoil composite for thermal protection of reentry spacecraft

One of the most studied fossil beds of the upper Jurassic Period

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07" in length along the longest side

keep in mind that they are 300

Polished Ammonite Split Pair - 4.938" Cleoniceras roman "Ceramic insulation/multifoil composite for thermalAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 4. 938" 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