1. Researchers have described two new ancient species of South American rodents, including the oldest known chinchilla. These specimens, among others, suggest new information about the geological history of the Andes mountains. Read on here: http://bit.ly/Mm8eKF Pictured here: The fossilized jaw of the oldest chinchillid rodent, Eoviscaccia frassinettii, which is related to the modern chinchilla (© AMNH/M. Ellison)  

    Researchers have described two new ancient species of South American rodents, including the oldest known chinchilla. These specimens, among others, suggest new information about the geological history of the Andes mountains. Read on here: http://bit.ly/Mm8eKF

    Pictured here: The fossilized jaw of the oldest chinchillid rodent, Eoviscaccia frassinettii, which is related to the modern chinchilla (© AMNH/M. Ellison)

     

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