The mountain type of this, seen here, is the most primitive living rodent
... Hoary Marmots are common in the subalpine regions in the park, where they... [DOC] [TLE] Faded Genes: The 7 Most Primitive Living Mammals - WebEcoist [PAR] Nov 14, 2013 ... Click here to view the awesome infographic poster above in a much larger ... 
Mountain Beavers are the world's most primitive rodents and have... [DOC] [TLE] NORTH AMERICA IS HOME TO UNUSUAL ANIMALS [PAR] Mar 14, 2004 ...