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Air Abrasive Preparation of a Crinoid

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Air Abrasive Preparation of a Crinoid
We (re)prepared a fossil crinoid that we have had in our collection for many years now. This specimen, an Onychocrinus exculptus from the Lower Mississipian (Carboniferous) of the Edwardsville Formation of Indiana, USA, was found and prepared over 100 years ago. It was most likely part of a Victorian collection.Crinoids are found through a great [...]

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