Platyceras rarispinum

Submitted by: David Thompson
Taxon: Platyceras rarispinum
Submit date: 2009-05-05
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Alpena Formation
Age: Erian (Middle Devonian)
Submitter notes: A different view of the Platyceras showing the tightly coiled conch and the expansion of the shell. The Spine is in the background

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