Skeleton of a glyptodont on display at the Smithsonian National Museum of Natural History. During the late Pliocene these fortress-like mammals moved north across the Central American Land Bridge to populate the southern half of North America. Massive vertebrae, sometimes fused, and stumped-like feet were needed to support the heavy armor: a solid carapace formed by thick polygonal plates of bone (scutes) in a mosaic pattern, a thick head shield or casque, and a tail sheath of overlapping rings.Galleries:Extinct Mammals, Skeletons, Smithsonian Museum of Natural HistoryKeywords:district of columbia, extinct, glyptodont, mammal, museum of natural history, national museum of natural history, natural history, pliocene, skeleton, smithsonian, washington dcPhoto Location: National Museum of Natural History, Washington, DCPhotographer: Chad CullenDate of Photo: 06/26/2009Device Make: CanonDevice Model: Canon EOS 5DExposure Time: 1/320F Number: 28/10Original Dimensions: 2912×4368Picture Orientation: PortraitGPS Coordinates: 38°53'27.64"N 77°1'33.45"WPicture Number: 8125
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