|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Corynexochida - Illaenidae
It was assigned to Corynexochida by Sepkoski (2002); to Styginidae by Jell and Adrain (2003); and to Illaenidae by Raymond (1916), Amati and Westrop (2004) and Shaw and Bolton (2011).
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.