CRINOID CALYX

Submitted by: Mike Palescuk
Taxon: Megistocrinus sphaeralis
Submit date: 2010-12-28
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Alpena Formation
Age: Erian (Middle Devonian)
Submitter notes: Photo 1 of 3, Basal view, 44mm (1-3/4') wide. More prominent dorsal cup nodes than M. regularis.

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