"Guinea-zilla"—World's Largest Rodent?

<i>Phoberomys pattersoni</i>
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<i>Phoberomys pattersoni</i>
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The fossil-rich formation in Urumaco, Venezuela, where Phoberomys pattersoni was discovered.

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—Photograph courtesy Marcelo R. Sánchez-Villagra
 

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