blue Athyris brachiopods from the 'blue beds'

Submitted by: David Thompson
Taxon: Athyris lens
Submit date: 2008-02-25
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Traverse Formation
Age: Erian (Middle Devonian)
Submitter notes: Another view of these small brachiopods. Where these are found they are all about the same size but in a deep layer. Considering the numbers found at exposed sites,there must be millions of these brachiopods in the formation. It is staggering to wonder what was going on at this time whereby so many brachiopods of almost one size (and age?) lived and died preserved this way. These are things I wonder about and make collecting so fascinating.

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