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Order Spatangoida Agassiz 1840 (heart urchin)

Echinoidea - Irregularia

PaleoDB taxon number: 33337

Alternative spelling: Spatangoidea

Full reference: L. Agassiz. 1840. Catalogus systematicus Ectyporum Echinodermatum fossilium Musei Neocomiensis, secundum ordinem zoologicum dispositus; adjectis synonymis recentioribus, nec non stratis et locis in quibus reperiuntur. Sequuntur characteres diagnostici generum novorum vel minus cognitorum. Petitpierre, Neuchâtel 1-20

Parent taxon: Atelostomata according to A. Kroh and A. B. Smith 2010

Sister taxa: Acrolusiidae, Aulacopygus, Collyritidae, Disasteridae, Holasteroida, Orbigniana, Pycnasterides, Tithoniidae

Subtaxa: Allotoxaster, Amoraster, Apoxypetalum, Archaeopneustes, Asterostomatina, Barnumia, Brissidina, Brissoides, Cagaster, Caribbaster, Cestobrissus, Cottreaucorys, Enallaster, Enichaster, Epiaster, Gonzalezaster, Gymnopatagus, Hemiasteridae, Hemiasterina, Homoeopetalus, Hypselaster, Kertaster, Leymeriaster, Mazzettia, Micrasterina, Mortensenaster, Mundaster, Murraypneustes, Neoproraster, Nipponaster, Nudobrissus, Orthaster, Palaeostomidae, Paleopneustina, Paraheteraster, Peraspatangus, Periaster, Peroniaster, Pictaviechinus, Pliotoxaster, Pseudogibbaster, Pseudolinthia, Pseudowashitaster, Pusillaster, Royasendia, Schizobrissus, Somalechinus, Somaliasteridae, Spatagobrissus, Tessieria, Toxasteridae, Toxasterina, Wuarnia

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Ecology: slow-moving shallow infaunal deposit feeder-detritivore