|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Helcionelloida - Helcionellida - Coreospiridae
It was assigned to Protowarthiidae by Ulrich and Scofield (1897); to Bucaniellinae by Knight et al. (1960); to Bucanellidae by Starobogatov (1970); to Bellerophontida by Sepkoski (2002); and to Coreospiridae by Wagner (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.