|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Phacopida - Pterygometopidae
It was assigned to Eomonorachinae by Ludvigsen and Chatterton (1982); to Phacopida by Sepkoski (2002); and to Pterygometopidae by Clarkson et al. (1977) 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.