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Keywords from Image Description:
Trilobite cranidium numbered.svg en Diagram showing the larger details of the cephalon of trilobite Fixigena Librigena Glabella trilobites info Sam Gon III trilobites info File SamGonIIIcranidium Sam Gon III raster Ch vector Trilobite facial sutures Diagram File Trilobite cranidiumen svg English Trilobite anatomy SVG anatomy