|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Trilobita - Lichida - Odontopleuridae
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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.
|R. Feist 2002 (Gondwanaspis)||Cephalon with glabellar lobes not inflated, rect− angular central lobe; straight ocular ridges; no sutural ridges; eye shifted in midst of genal field; no occipital spines; straight, outward directed librigenal spine, exceeding length of glabella; spines along the entire anterior and antero−lateral margins.|