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Fossil Fagaceae pollen from the Eocene of West Greenland. a and d LM micrographs. b, c, e, and f SEM micrographs. All pollen grains are shown in equatorial view. a–f Eotrigonobalanus sp. Scale bar is 10 µm in a, b, and d, and 1 µm in c, e, and f
