Multi-Armed Starfish

Submitted by: John Topor
Taxon: Arkonaster topororum
Submit date: 2007-02-14
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Arkona Formation
Age: Erian (Middle Devonian)
Submitter notes: Specimen is 150mm in diameter. The most complete of three known specimens. This species has 28 arms. Note the large madreporite at the 11 o'clock position just outside of the mouth-angle plates.

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