|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the class Ophiocistioidea by Ubaghs (1953), Jell (1983), Boczarowski (2001), Sepkoski (2002) and Reich and Haude (2004).
It was assigned to Echinozoa by Jell (1983) and Boczarowski (2001); to Echinodermata by Ubaghs (1953) and Sepkoski (2002); and to Eleutherozoa by Reich and Haude (2004).
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.