Mucrospirifer with crinoid holdfast

Submitted by: David Thompson
Taxon: unknown crinoid holdfast , Mucrospirifer thedfordensis
Submit date: 2008-02-17
Location (approximate): Milan, Washtenaw, MI
Stratigraphy: Silica Formation
Age: Erian (Middle Devonian)
Submitter notes: This Mucrospirifer thedfordensis has a crinoid holdfast growing across the commissure. The roots are in both halves of the valves and this would only happen when the braciopod was dead.

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