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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Androspyrida Diam Fig Nephrospyris paradictyum sp vel Paradictyum paradoxum The complete shell seen from the frontal side Fig Nephrospyris paradictyum sp The incomplete shell seen from the dorsal side Fig Nephrospyris paradictyum sp The sagittal ring isolated from the dorsal