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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Dorataspida Diam Fig Coscinaspis peripora vel Dorataspis peripora sp Fig Dorataspis fusigera sp Fig Dorataspis micropora sp Fig Dorataspis typica sp Fig Polar view of the central union of the twenty spines Fig Ceriaspis inermis sp Fig Ceriaspis favosa sp Fig Hystrichaspis