|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Redlichiida - Nevadiidae
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.
|L. E. Babcock and J. S. Peel 2007||Glabella slightly tapering forward; ocular lobe relatively small, posterior opposite L1; interocular area narrower than extraocular area; genal spine short, rarely extending posteriorly beyond the first thoracic segment. Thorax with 17-18 segments; posterior segment may be fused with anterior part of simple pygidium; pleural spines short (exsag.), slender.|