|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Atrypida - Cyclospiridae
It was assigned to Dayiidae by Macomber (1970); to Cyclospirinae by Mitchell (1977) and Jin and Chatterton (1997); to Cyclospiridae by Rõõmusoks (1964) and Williams et al. (2002); to Atrypida by Sepkoski (2002); and to Protozygidae by Zhan and Jin (2005).
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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.