Gastropod with spines

Submitted by: Joseph Koniecki
Taxon: Platyceras indianaensis
Submit date: 2015-11-05
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Thunder Bay Formation
Age: Erian (Middle Devonian)
Submitter notes: This species is rare in the Traverse Group. This specimen has two of its spines still attached. The gastropod is 4.3 cm across including the spine.

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