Crinoid Calyx

Submitted by: Stan Hyne
Taxon: Megistocrinus sp.
Submit date: 2008-03-13
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Thunder Bay Formation
Age: Erian (Middle Devonian)
Submitter notes: A bottom view of the calyx which measures 42mm in diameter and 33mm high.

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