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

Belongs to Arkonaster according to D. B. Blake 2009

Sister taxa: none

Type specimen: Holotype UMMP 64451

Ecology: slow-moving low-level epifaunal carnivore