Image: Crotalus oreganus distribution (IUCN)
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Description: Geographic distribution of Crotalus oreganus (Native: Canada; Mexico; United States). Classification according to IUCN, Crotalus (oreganus) caliginis recognized as distinct species.
Author: compiled by rbrausse with Quantum GIS Map data: Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Range data: Hammerson, G.A., Frost, D.R. & Hollingsworth, B. 2007. Crotalus oreganus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 20 February 2013.
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