Template:Pigg, Manchester & Wehr, 2003

• Pigg, K.B.; Manchester, S.R.; Wehr, W.C. 2003. Corylus, Carpinus, and Palaeocarpinus (Betulaceae) from the Middle Eocene Klondike Mountain and Allenby Formations of Northwestern North America. International Journal of Plant Science 164(5): 807–822. doi:10.1086/376816. ISSN 1058-5893.   
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Nomenclatural acts

• Date of publication: September 2009

New names

• †Carpinus perryae
• †Corylus johnsonii
• †Palaeocarpinus barksdaleae
• †Palaeocarpinus dentatus
• †Palaeocarpinus stonebergae