|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Redlichiida - Archaeaspididae
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.
|A. R. Palmer and L. N. Repina 1993||Fallotaspidoidea with anterior part of L4 anterior to line tangent to anterolateral margin of ocular lobe. Parafrontal band usually present, continuing to or nearly to anterior end of L4. Width of interocular area approximately same as extraocular area. Genal spines usually present.|