|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Echinoidea - Cassiduloida
It was assigned to Irregularia by Smith (1991) and Smith (1995); to Atelostomata by Larrain and Biró-Bagóczky (1985) and Berndt (2003); to Echinoidea by Donovan (1993), Sepkoski (2002) and Manso and Andrade (2008); and to Neognathostomata by Kroh and Smith (2010).
|Year||Name and author|
|1847||Cassiduloida Agassiz and Desor|
|1985||Cassiduloida Larrain and Biró-Bagóczky p. 1410|
|1991||Cassiduloida Smith p. 37|
|1993||Cassiduloida Donovan p. 99|
|1995||Cassiduloida Smith p. 189|
|2002||Cassiduloida Sepkoski, Jr.|
|2003||Cassiduloida Berndt p. 87|
|2008||Cassiduloida Manso and Andrade p. 322|
|2010||Cassiduloida Kroh and Smith p. 171|
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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.