Cornus swingii Manchester, Xiang, Kodrul and Akhmetiev, Holotype from Horse Creek, Montana, UF 18969-38375. An overall view of the leaf with nearly complete lamina and petiole. Manchester, S.R., Q. Xiang, T. M. Kodrul and M. A. Akhmetiev. 2009. Leaves of Cornus (Cornaceae) from the Paleocene of North America and Asia Confirmed by Trichome Characters. International Journal of Plant Sciences, 170 (1): 132–142. Fig. 2I.