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Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Concharida Diam Fig Conchidium terebratula sp Lateral view from the left side Fig Conchidium terebratula sp piece of the frontal girdlefissure with the teeth of both valves catching into one another Fig Conchidium rhynchonella sp Lateral view from the left side Fig Conchidium