|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Phacopida - Cheiruridae
It was reranked as Cheirurus (Cyrtometopus) by Reed (1906).
It was assigned to Cheirurus by Reed (1906); to Phacopida by Sepkoski (2002); and to Cheiruridae by Harrington and Leanza (1957) and Jell and Adrain (2003).
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.