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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Phnocalpida Anthocyrtida et Sethocyrtida Diam Fig Sethoconus facetus sp vel Phlebarachnium facetum Upper part of the shell Fig Sethoconus venosus sp vel Phlebarachnium venosum Shell including the fourlobed central capsule Fig Sethophormis aurelia sp vel Leptarachnium aurelia