Submitted by: Michael Lask
Taxon: Arthroacantha carpenteri
Submit date: 2015-12-20
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Arkona Formation
Age: Erian (Middle Devonian)
Submitter notes: The stem alone is 137 mm long. Collected and prepared by Patricia Rutkowski. This incredible specimen is on a chunk of Arkona Shale that is over 15 inches long. Pat spent countless hours preparing this classic crinoid.