|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Rhynchonellida - Sphenotretidae
It was considered a nomen dubium by Williams et al. (2007).
It was assigned to Lepidocyclinae by Zhan and Cocks (1998); to Ancistrorhynchidae by Popov et al. (2000); to Atrypida by Sepkoski (2002); and to Sphenotretidae by Rong et al. (2008).
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.