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Order Cassiduloida Agassiz and Desor 1847 (sea urchin)

Echinoidea - Irregularia

PaleoDB taxon number: 33187

Full reference: L. Agassiz and P. J. E. Desor. 1847. Catalogue raisonné des familles, des genres, et des espèces de la classe des échinodermes. Annales des Sciences Naturelles, Troisième Série, Zoologie 7-8

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

Sister taxa: Apatopygidae, Archiaciidae, Bothryopneustes, Clypeasteroida, Clypeidae, Clypeolampadidae, Echinolampadoida, Nucleolitidae, Pygaulidae

Subtaxa: Astrolampas, Astropygaulus, Bothryopneutes, Calilampus, Cassidulina, Centropygus, Clarkiella, Claviaster, Clypeanthus, Conoclypeus, Echinanthus, Eogaleropygus, Harduinia, Laticlypus, Lovenilampas, Neolampadina, Ovulechinus, Platypygus, Procassidulus, Pygurostoma, Stegopygus

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Ecology: slow-moving semi-infaunal detritivore