Ammonite

Submitted by: John Topor
Taxon: Tornoceras (T.) arkonense
Submit date: 2008-03-02
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Arkona Formation
Age: Erian (Middle Devonian)
Submitter notes: A common, coiled ammonite that occurs in the Arkona Formation. They are pyritic internal molds showing their suture lines. These are large specimens for the Arkona shale with the larger one measuring 17mm and the smaller 15mm in diameter.

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