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The Guyenne spiny-rat (''Proechimys guyannensis'') or Cayenne spiny rat, is a spiny rat species found in
Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
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Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...
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French Guiana French Guiana, or Guyane in French, is an Overseas departments and regions of France, overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies. Bordered by Suriname to the west ...
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Guyana Guyana, officially the Co-operative Republic of Guyana, is a country on the northern coast of South America, part of the historic British West Indies. entry "Guyana" Georgetown, Guyana, Georgetown is the capital of Guyana and is also the co ...
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Suriname Suriname, officially the Republic of Suriname, is a country in northern South America, also considered as part of the Caribbean and the West Indies. It is a developing country with a Human Development Index, high level of human development; i ...
and
Venezuela Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...
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Phylogeny

Morphological characters and mitochondrial cytochrome b DNA sequences showed that ''P. guyannensis'' belongs to the so-called ''guyannensis'' group of ''Proechimys'' species, and shares closer phylogenetic affinities with the other member of this clade: '' P. roberti''.


References

Proechimys Mammals of Colombia Mammals described in 1803 Taxa named by Étienne Geoffroy Saint-Hilaire {{Echimyidae-stub