Order Spatangoida Agassiz 1840 (heart urchin)

Echinoidea - Spatangoida

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, Neuch√Ętel 1-20

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

See also Berndt 2003, Clark 1904, Donovan 1993, Manso and Andrade 2008, Sepkoski 2002, Smith 1991, Smith 1995, Squires 1984, Squires 1987 and Squires 1999

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

Subtaxa: Allotoxaster Amoraster Apoxypetalum Archaeopneustes Asterostomatina Barnumia Brissidina Brissoides Cagaster Cestobrissus Cottreaucorys Echinocoridae Enichaster Gonzalezaster Gymnopatagus Hemiasteridae Hemiasterina Homoeopetalus Hypselaster Kertaster Leymeriaster Micrasterina Mortensenaster Mundaster Murraypneustes Neoproraster Niponaster Nudobrissus Orthaster Palaeostomidae Paleopneustina Paraheteraster Peraspatangus 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

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