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Gateway to the Paleobiology Database
Order Arbacioida Gregory 1900 (sea urchin)

Echinoidea - Euechinoidea

PaleoDB taxon number: 151222

Alternative spelling: Arbacina

Full reference: J. W. Gregory. 1900. The Echinoidea. A Treatise on Zoology. Part III. The Echinodermata, A. & C. Black, London 282-332

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

Sister taxa: Besairiecidaris, Bramus, Camarodonta, Crinocidaris, Glyphopneustidae, Plesiocidaroida, Stirodonta, Stomopneustoida

Subtaxa: Acropeltidae, Arbaciidae, Dialithocidaris, Glypticidae, Goniopygidae, Pygmaeocidaris, Tetrapygus

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Ecology: slow-moving low-level epifaunal grazer