|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Corynexochida - Illaenidae
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.
|J. R. Carlucci et al. 2012||Predominant shape of lunette is elliptical (character 4, state 1), path of the cranidial axial furrow is straight (character 5, state 0), 10 thoracic segments (character 8, state 2), large paired muscle scars present on pygidium (character 11, state 1), ratio of pygidial length to width is high (76–83%) (character 16, state 3), axial furrow expressed as notches flanking centre of the pygidial anterior margin (character 17, state 0).|