1.95" Hoploscaphites Brevis Ammonite - South Dakota

Hoploscaphites Brevis Ammonite - South Dakota #155429

This is a beautiful Hoploscaphites brevis from the Pierre Shale of South Dakota. It was found inside of a hard concretion and the rock had to be meticulously prepared away. The ammonite is still partially attached to the limestone and comes with an acrylic display stand for preferred presentation.

These 70 million year old ammonites lived when South Dakota was a shallow inland sea. They were found preserved in concretions when split open. They then had to be hand-prepared to remove the hard rock surrounding them from their shells, a very time consuming task.

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