Polished Ammonite Split Pair - 3.154" Cleoniceras brazil CRINOID (170

CRINOID (170

I opened my guide book and learned that sure enough

This specimen is a piece of a mission-flown insulation blanket

rex also had some of the largest teeth of any carnivorous dinosaur

Their whip-like arms and star shaped bodies have remained relatively unchanged through hundreds of millions of years

Polished Ammonite Split Pair - 3.154" Cleoniceras brazil CRINOID (170Ammonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 154" 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