PLATE 100
RECENT RADIOLARIA. THE PACIFIC OCEAN, TROPICAL ZONE
1-3 - Rhizosphaera medianum (Nigrini); 4 - Rhizosphaera sp. aff. R. trigonacantha Haeckel; 5-6 - Rhizosphaera arcadophorum Haeckel; 7 - Saturnalis circularis Haeckel; "a" and "b" are the same specimen at the different focus. r/v "Vitiaz".
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