|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the class Hyolitha by Malinky (1990), Wotte (2006) and Malinky and Yochelson (2007).
It was assigned to Metazoa by Sepkoski (2002); to Mollusca by Malinky (1990), Wotte (2006) and Malinky and Yochelson (2007); and to Lophophorata by Moysiuk et al. (2017).
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.