Hemiaulus curvatuloides Witkowski (2022)
Comment: Massive valve with only slightly curved, but clearly disproportional polar elevations.
Locality:
Ocean Drilling Program Hole 1051A (Blake Nose, western North Atlantic), sample: 171B-1051A-36X-1, 50-51 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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