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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Podocyrtida Diam Fig Pterocorys rhinoceros sp Fig Pterocorys columba sp Fig Pterocorys campanula sp Fig Pterocorys hirundo sp Fig Pterocorys aquila sp Fig Dictyoceras insectum sp Fig Dictyoceras insectum sp Seen from the apex Fig Dictyoceras formica sp Fig Dictyoceras