|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Asteroidea - Hemizonida - Helianthasteridae
It was assigned to Lepidasteridae by Schuchert (1915); to Taeniactininae by Spencer (1927); to Helianthasterinae by Owen (1965); to Taeniactinidae by Spencer and Wright (1966); to Hemizonida by Sepkoski (2002); and to Helianthasteridae by Welsh (1984) and Blake (2009).
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|J. R. Welsh 1984||Helianthasteridae with 24-35 arms; ambulacrals rectangular, counterparts on two sides of arm arranged opposite; adambulacrals wide, curved, offset from corre- sponding ambulacrals, with one to several spines; madreporite large, circular, aboral; aboral skeleton unknown.|