Alternative spelling: Hemizonina
Full reference: W. K. Spencer. 1951. Early Palaeozoic starfish. Philosophical Transactions of the Royal Society of London, series B 235(B623):87-129
Parent taxon: Asteroidea according to D. B. Blake 1989
Sister taxa: Ambuloasteroidea, Arthrasteridae, Cryptozonia, Embolasteridae, Eriaster, Euasteroidea, Fandasteridae, Hudsonasteridae, Lepidasteridae, Monasteridae, Neoasteroidea, Neopalaeasteridae, Palasterinidae, Petraster, Phanerozonida, Platyasterida, Pleiadeaster, Pleuraster, Promopalaeaster, Promopalaeasteridae, Protasteracanthion, Pustulosida, Spinulosacea, Trichotaster, Uranasteridae, Zorocallida
Subtaxa: Helianthasteridae, Lacertasterias, Lepyriactinidae, Schondorfia, Taeniactinidae
Ecology: slow-moving low-level epifaunal carnivore