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Fossil Ammonite Perisphinctes (Jurassic, Madagascar)

$15.00 USD
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About 45w x 39h x 20 mm.

This perfectly coiled fossil ammonite has been replaced by calcite and has a chalky white to gray coating.  The inner part of the shell has been replaced by more crystalline calcite.  Perisphinctes sp, from the Jurassic of Tulear, Madagascar.

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