Asteroidea - Hemizonida - Helianthasteridae

Full reference: R. V. Kesling. 1982. Arkonaster, a new multi-armed starfish from the Middle Devonian Arkonia shale of Ontario. Contributions from the Museum of Paleontology, University of Michigan 26(6):83-115

Parent taxon: Helianthasteridae according to D. B. Blake 2009

Sister taxa: Echinasterella, Helianthaster, Helianthasterinae, Hystrigaster, Lepidasterella

Subtaxa: Arkonaster topororum

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Type: Arkonaster topororum

Ecology: slow-moving low-level epifaunal carnivore