Polished Ammonite Split Pair - SOLD 4.51" Cleoniceras megalodonteeth but this larger specimen measures

but this larger specimen measures approximately 1 cm in length

NASA disposition paperwork received with this item indicates this particular piece of the payload liner was removed after Discovery’s mission to deploy numerous science instruments (STS-85)

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Dromaeosaurid teeth

Polished Ammonite Split Pair - SOLD 4.51" Cleoniceras megalodonteeth but this larger specimen measuresAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 4. 51" 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