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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Stephanida Semantida Coronida Tympanida Zygospyrida Phormospyrida et Androspyrida Diam Fig Lithotympanum tuberosum sp Fig Eutympanium musicantum sp Fig Semantis distephanus sp Fig Sphrospyris globosa sp Fig Trissocyclus stauroporus sp Fig Trissocircus binellipsis sp Fig