Extinct ulmaceous fruits – Paleobotany + Palynology https://www.floridamuseum.ufl.edu/paleobotany/gallery/extinct-ulmaceous-fruits-image1/
Manchester, S.R. 1987. Figure 8 in Manchester, 1987. Extinct ulmaceous fruits from the Tertiary of Europe and western North America. Review of Palaeobotany and Palynology 52:119-129.
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