Template:Douglas et al., 2009

• Douglas, M.E., Douglas, M.R., Schuett, G.W. & Porras, L.W. 2009. Global climate change and evolution of the New World pitviper genus Agkistrodon (Viperidae). Journal of Biogeography 36(6): 1164–1180. DOI: 10.1111/j.1365-2699.2008.02075.x  
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Nomenclatural acts

• Date of publication: June 2009
• No new names