This is a beautifully preserved tortoise fossil of Stylemys nebracensis. It slowly plodded over the temperate area of South Dakota about 30 million years ago in an area known as the White River Badlands of South Dakota. Today the badlands are a series of highly eroded hills and gullies of light colored sedimentary layers. Stylemys was the first species of fossil tortoise to be discovered and described in North America.
Dimensions: 5.5 inches, 14 cm (length) x 5 inches, 13 cm (width) (heigh on the matrix) 4.75 inches, 12 cm. Weight = 5 lb 11 oz. or 2585 grams. Minimal restoration – less than five percent.
Name: Stylemys nebrascensis Geologic Age: Oligocene (30-35 Million Years Old) Locale: Brule Formation, White River Badlands Group, South Dakota