Trinacria pileolus (Ehrenberg) Grunow (1884)
Comment: Large valve with a clear circular dome in the central part of the valve face. Note the multiple rimoportulae visible close to the margin of the central dome.
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, EC Plan-NEOFLUAR 40×/0.75 + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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