ammonites
banner
Gateway to the Paleobiology Database
†order Hemizonida Spencer 1951 (sea star)

Asteroidea

PaleoDB taxon number: 31376

Alternative spelling: Hemizonina

Synonym: Gnathasterina Spencer 1951 (taxon 101202)

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, Eriaster, Euasteroidea, Euaxosida, Fandasteridae, Hudsonasteridae, Kermasida, Lepidasteridae, Neopalaeasteridae, Omanasteridae, Petraster, Phanerozoma, Phanerozonida, Platyasterida, Pleiadeaster, Pleuraster, Promopalaeaster, Promopalaeasteridae, Protasteracanthion, Pustulosida, Spinulosacea, Trichotaster, Uranasteridae

Subtaxa: Helianthasteridae, Lacertasterias, Lepyriactinidae, Palaeostellidae, Schondorfia, Taeniactinidae

View classification

Ecology: slow-moving low-level epifaunal carnivore