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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Cubosphrida Diam Fig Hexadendron bipinnatum sp Fig Hexacromyum octahedrum sp Fig Hexancistra mirabilis sp Hexapitys mirabilis The spherical central capsule encloses the concentric spherical inner shell which is filled up by the nucleus and is surrounded by the octahedral outer