|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the unranked clade Calycina by Kroh and Smith (2010).
It was assigned to Stirodonta by Smith (1991); to Acroechinoidea by Smith (1995); to Echinoidea by Donovan (1993) and Jagt (2000); and to Carinacea by Kroh and Smith (2010).
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.