Submitted by: Joseph Koniecki
Taxon: Spiniplatyceras arkonense, Arthroacantha carpenteri
Submit date: 2008-03-22
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Arkona Formation
Age: Erian (Middle Devonian)
Submitter notes: This plate has a partial crinoid crown with several gastropods lying around. The plate is 17 cm across.