|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||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.
|A. R. Palmer and L. N. Repina 1993||Fallota.spidoidea with glabella weakly to strongly tapered forward in dorsal view. L4 elongate. Ocular lobe connected only to posterior part of L4. Interocular area narrow. Posterior tips of ocular lobes op- posite or anterior to occipital furrow. Width of interocular area variable. Thorax of 15 to 27 segments, without development of macropleurae.|