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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Liosphrida et Astrosphrida Diam Fig Cromyechinus icosacanthus sp Fig Cromyomma villosum sp Fig Cromyechinus dodecacanthus sp Fig The innermost shells Fig Cromyomma circumtextum sp Fig Cromyomma mucronatum sp Fig The innermost shells Fig Cromyodrymus abietinus sp Fig Cromyodrymus