|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
It was reranked as the subclass Disparida by Webster and Rakhmonov (2009) and Webster et al. (2009); it was reranked as the superorder Disparida by Wright et al. (2017).
It was assigned to Inadunata by Donovan (1984) and Donovan (1986); to Crinoidea by Sepkoski (2002), Webster and Rakhmonov (2009), Webster et al. (2009) and Ausich et al. (2015); and to Inadunata by Wright et al. (2017).
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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.