|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Ptychopariida - Ptychopariidae
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.
|V. Kordule 2006||Glabella highly convex, bluntly conical, anteriorly rounded, extending nearly toward border furrow; axial furrows deep; occipital ring vaulted, with small median node; S1, S2 and S3 shallow; preglabellar field flat; anterior border short (sag.), high, convex, separated from glabella by deeply concave border furrow; ocular ridges prominent; palpebral lobes small; genal caeca obscure; genal spine short; thorax of 14 segments; pygidium transverse, with axis with three to five rings and large terminal piece; pleural furrows present, inter pleural furrows absent; surface of exoskeleton finely tuberculate.|