Rylandsia biradiata Greville (1861)
Comment: Small valve belonging to an intact frustule.
Locality: Deep Sea Drilling Project Hole 512 (Maurice Ewing Bank, south Atlantic). Sample: 71-512-15-3, 17-18 cm.
Photographed using: Zeiss Axio.A1, Plan-APOCHROMAT 100×/1.4 Oil DIC + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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