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Pleistocene Fauna, inferior molars of the Gladwin Horse, Equus scotti Gidley, section 35, Lyons Township, Iowa, late 1890s or early 1900s

Pleistocene Fauna, inferior molars of the Gladwin Horse, Equus scotti Gidley, section 35, Lyons Township, Iowa, late 1890s or early 1900s

Pleistocene Fauna, cast of the 6th molar of a mastodon, Burlington, Iowa, late 1890s or early 1900s

Pleistocene Fauna, cast of the 6th molar of a mastodon, Burlington, Iowa, late 1890s or early 1900s

Pleistocene Fauna, side view of well worn molar, 6th superior, right side, Mastodon mirificus Leidy, from well (well went down through Kansan Drift), Akron, Iowa, late 1890s or early 1900s

Pleistocene Fauna, side view of well worn molar, 6th superior, right side, Mastodon mirificus Leidy, from well (well went down through Kansan Drift), Akron, Iowa, late 1890s or early 1900s

Pleistocene Fauna, fossil bones, Pisgah and Missouri Valley, Iowa, late 1890s or early 1900s

Pleistocene Fauna, fossil bones, Pisgah and Missouri Valley, Iowa, late 1890s or early 1900s

Pleistocene Fauna, large camel calcaneum, Cox Pit, Missouri Valley, Iowa, late 1890s or early 1900s

Pleistocene Fauna, large camel calcaneum, Cox Pit, Missouri Valley, Iowa, late 1890s or early 1900s

Pleistocene Fauna, upper and lower molars of Equus scotti, the Gladwin horse, late 1890s or early 1900s

Pleistocene Fauna, upper and lower molars of Equus scotti, the Gladwin horse, late 1890s or early 1900s

Horse molars
Chicago, Milwaukee and St. Paul Railroad cut, Manning, Iowa, June 10, 1915

Chicago, Milwaukee and St. Paul Railroad cut, Manning, Iowa, June 10, 1915

Located 3.5 miles East of Manning, Warren Twp., section 13, N.W. 1/4.
Chicago, Milwaukee and St. Paul Railroad cut, Delmar Junction, Iowa, late 1890s or early 1900s

Chicago, Milwaukee and St. Paul Railroad cut, Delmar Junction, Iowa, late 1890s or early 1900s

Located 5 miles East of Delmar Junction, Waterford Twp., T. 83 N., R. 4 E., section 8, N.E. 1/4.
Surface of an alluvial fan at the foot of the Sierra Mountains in Owens Valley, Calif., late 1890s or early 1900s

Surface of an alluvial fan at the foot of the Sierra Mountains in Owens Valley, Calif., late 1890s or early 1900s

Railroad cut revealing Pleistocene, loess sections, Natchez, Miss., late 1890s or early 1900s

Railroad cut revealing Pleistocene, loess sections, Natchez, Miss., late 1890s or early 1900s