|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Echinoidea - Arbacioida - Arbaciidae
It was assigned to Arbacioida by Donovan (1993); to Goniopygidae by Smith (1995); to Phymosomatoida by Sepkoski (2002); and to Arbaciidae by Fell and Pawson (1966), Geys (1981) and Berndt (2003).
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.