|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the unranked clade Septibranchia by Bieler and Mikkelsen (2006); it was reranked as the superorder Septibranchia by Nevesskaja (2009).
It was assigned to Anomalodesmata by Ward and Blackwelder (1987) and Coan et al. (2000); to Heterodonta by Bieler and Mikkelsen (2006); and to Bivalvia by Nevesskaja (2009).
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.