Friends of the UMMP Michigan Basin Specimen Database

Complete specimen of Arthroacantha

Submitted by: Joseph Koniecki
Taxon: Arthroacantha carpenteri
Submit date: 2007-02-02
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Arkona Formation
Age: Erian (Middle Devonian)
Submitter notes: The spread of the arms is 4 inches at its widest.

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Comments:

Tomasz BaumillerDecember 02, 2008 at 9:38 AM

great specimen--are some of those arms regenerated or just a taphonomic artifact?

Joseph KonieckiAugust 26, 2009 at 2:53 PM

There are no regenerating arms on this specimen. Look at the Devonaster/Arthroacantha combination to see regenerating arms on the crinoid.

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