Submitted by: David Thompson
Taxon: Megistocrinus nodosus
Submit date: 2014-10-02
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Thunder Bay Formation
Age: Erian (Middle Devonian)
Submitter notes: Two different sizes of the same species. The larger is in the previous photo, the small one is 3 cm thick by 5. cm wide.