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ACKNOWLEDGMENTS
The authors wish to thank K. Perkins (FLAS), G. Russell (SI), and J.C. Solomon (MO) for access to herbarium specimens; M. Baranova and C. Jeffrey (Komarov Botanical Institute, Russia) for cuticle preparation techniques; S. Manchester (FLMNH) for help in fruit and seed identification and manuscript suggestions; and H. Wang (FLMNH), D. Christophel (Denver University), B. Hammel (MO), R. Burnham (Michigan), C. Jaramillo (STRI), and one anonymous reviewer for helpful comments. This is the University of Florida Contribution to Paleobiology publication number 555.
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