Crinoid Calyx

Submitted by: Stan Hyne
Taxon: Unknown sp.
Submit date: 2008-03-13
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Thunder Bay Formation
Age: Erian (Middle Devonian)
Submitter notes: This undescribed crinoid measures 13mm high x 19mm wide. Another view.

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