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|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Ptychopariida - Conocoryphidae
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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.
|C. E. Resser 1936||Eyeless trilobite, oval in outline. Glabella tapered, with several sets of short, recurved furrows ; extends nearly to the anterior furrow. Deep marginal furrow extends all around the cephalon, being interrupted only at the genal angles. Two short diverging furrows cross the preglabellar area, joining the dorsal with the marginal furrow, thus making a distinct lobe anterior to the glabella. Eye ridges faint.
Thorax of 15 segments, with blunt tips. Pygidium fused, transverse