Mastogloia sagitta-cupidinis Brun (1896)
Comment: Poorly preserved, broken valve. This extremely rare species was named after the Cupid's arrow (sagitta Cupidinis).
Locality: Ocean Drilling Program Hole 1050A (Blake Nose, western North Atlantic), sample: 171B-1050A-3H-6, 100-101 cm (middle Eocene).
Photographed using: Zeiss Axio.A1, Plan-APOCHROMAT 100×/1.4 Oil DIC + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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