File:Symphysopsis eyes oblique.jpgDescriptionSymphysopsis eyes oblique.jpg English: The fused, holochroal eyes of a Symphysops sp. trilobite, Order Asaphida, Family Cyclopygidae, visual
File:Symphysopsis eyes frontal.jpgDescriptionSymphysopsis eyes frontal.jpg English: The fused, holochroal eyes of a Symphysops sp. trilobite, Order Asaphida, Family Cyclopygidae, visual