Placoblastus obovatus

Submitted by: David Thompson
Taxon: Placoblastus obovatus
Submit date: 2007-02-03
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Traverse Formation
Age: Erian (Middle Devonian)
Submitter notes: This very large example of this Blastoid is hand held to give scale to the speciman. This is a side view to show the thin feeding grooves (ambulacra)

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