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...to the fused eyes, common to the species of this genus. Some (sub)species of the cyclopygid genera [[Cyclopyge (trilobite)|''Cyclopyge'']] and ''[[Pricy ''Symphysops'' is the combination of the Ancient Greek σύν (syn) "together", φύσις (physis) "growth" and

| image_caption = Two cephalons of the trilobite ''Trimerocephalus interruptus'' ...' species (Trilobita, Phacopidae) from the Late Devonian (Early Famennian) of Poland|journal= Zootaxa|volume= 3626|issue= 3|pages= 345–355|url= http://

| image_caption = A pair of ''Macroolithus yaotunensis'' eggs ...nests consist of large, concentric rings of paired eggs. There is evidence of blue-green pigmentation in its shell, which may have helped camouflage the