Complete crown of unusual crinoid

Submitted by: David Thompson
Taxon: Aorocrinus cassedayi
Submit date: 2011-05-03
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Alpena Formation
Age: Erian (Middle Devonian)
Submitter notes: This view shows the arms and calyx of this rather rare crinoid. There is a frond of Bryozoan draped over some of the arms which show the flattened tips of the arms

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