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Petraster Billings 1858 (sea star)

Asteroidea - Triploblastica

PaleoDB taxon number: 31368

Synonym: Uranaster Gregory 1899 (taxon 104465)

Full reference: E. Billings. 1858. On the Asteridae of the Lower Silurian rocks of Canada. Figures and descriptions of Canadian organic remains. Geological Survey of Canada 3:75-85

Parent taxon: Asteroidea according to J. Dean Shackleton 2005

Sister taxa: Ambuloasteroidea, Arthrasteridae, Cryptozonia, Eriaster, Euasteroidea, Euaxosida, Fandasteridae, Hemizonida, Hudsonasteridae, Kermasida, Lepidasteridae, Monasteridae, Neopalaeasteridae, Omanasteridae, Palasterinidae, Phanerozoma, Phanerozonida, Platyasterida, Pleiadeaster, Pleuraster, Promopalaeaster, Promopalaeasteridae, Protasteracanthion, Pustulosida, Spinulosacea, Trichotaster, Uranasteridae, Zorocallida

Subtaxa: Petraster americanus, Petraster angustior, Petraster kinahani, Petraster richi, Petraster rigidus, Petraster smythi, Uranaster ramseyensis

View classification

Type: Palasterina ramseyensis

Ecology: slow-moving low-level epifaunal carnivore