Third view of crinoid crown

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 stem attachment and detail of the calyx ornamentation. The crinoid crown is 2.6 cm high by 2.9 cm at the widest point. The calyx is 1.2 cm thick in this view

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