|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Cephalopoda - Goniatitida - Pericyclidae
It was reranked as Rotopericyclus (Hammatocyclus) by Gordon (1986).
It was assigned to Rotopericyclus by Gordon (1986); to Goniatitida by Sepkoski (2002); and to Pericyclinae by Korn (2006) and Furnish et al. (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.