Echinoidea - Irregularia

PaleoDB taxon number: 151093

Full reference: K. A. von Zittel. 1879. Handbuch der Palaeontologie 1(1):1-765

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

Sister taxa: Echinoneoida, Holectypoida, Microstomata, Pygasteridae

Subtaxa: Acrolusiidae, Asternata, Aulacopygus, Collyritidae, Disasteridae, Holasteroida, Orbigniana, Pycnasterides, Spatangoida, Sternata, Tithoniidae

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Ecology: epifaunal grazer-deposit feeder