Taxodium
Coleman, A. L., and K. B. Pigg.  2002. Taxodiaceous conifers from the middle Miocene Yakima Canyon flora, Washington State, USA.  Arizona/Nevada Academy of Science, Abstracts.
Hansen, A., and K. B. Pigg.  2001.  Taxodiaceous conifers from the middle Miocene Yakima Canyon flora, Washington State, USA.  Botany 2001 Abstracts: 71. 

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