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Echinoidea - Temnopleuroida
It was reranked as the order Temnopleuroida by Fell and Pawson (1966), Linder et al. (1988), Donovan (1993) and Sepkoski (2002).
It was assigned to Camarodonta by Mortensen (1942); to Echinacea by Fell and Pawson (1966); and to Echinoidea by Linder et al. (1988), Donovan (1993) and Sepkoski (2002).
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.