Arachnoidiscus clarus Brown (1933)
Comment: Small valve bearing radial slits near the center.
Locality: Ocean Drilling Program Hole 1050C (Blake Nose, western North Atlantic), sample: 171B-1050C-2R-4, 100-101 cm (early Paleocene).
Photographed using: Zeiss Axio.A1, Plan-APOCHROMAT 100×/1.4 Oil DIC + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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