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Browse Items (71585 total)

Bison, elk, and Virginia deer bones, Iowa, late 1890s or early 1900s

Bison, elk, and Virginia deer bones, Iowa, late 1890s or early 1900s

El Capitan Granite and jointed granite of Yosemite Quadrangle at the summit of ridge south of head of Morrison Creek, Calif., late 1890s or early 1900s

El Capitan Granite and jointed granite of Yosemite Quadrangle at the summit of ridge south of head of Morrison Creek, Calif., late 1890s or early 1900s

Compound fold of Lower Cambrian on top of Boardman Hill, Rutland, Vt., late 1890s or early 1900s

Compound fold of Lower Cambrian on top of Boardman Hill, Rutland, Vt., late 1890s or early 1900s

The hammer is 15 1/2 inches long.
Bouquet of sea lilies, crinoids dredged by the Bahama Expedition, late 1890s or early 1900s

Bouquet of sea lilies, crinoids dredged by the Bahama Expedition, late 1890s or early 1900s

Pleistocene Fauna from elephants and fossil species 1) Elephas primigenius, 2) Elephas columbi, 3) Elephas imperator (about 2/7 natural size), Iowa, late 1890s or early 1900s

Pleistocene Fauna from elephants and fossil species 1) Elephas primigenius, 2) Elephas columbi, 3) Elephas imperator (about 2/7 natural size), Iowa, late 1890s or early 1900s

1) Denison, 2) Logan, 3) Pisgah
Pleistocene Fauna, Equus scotti Gidley (fossil horse) upper molars, left side, natural size, section 35, Lyon Township, Iowa, late 1890s or early 1900s

Pleistocene Fauna, Equus scotti Gidley (fossil horse) upper molars, left side, natural size, section 35, Lyon Township, Iowa, late 1890s or early 1900s

Pleistocene Fauna, mastodon mandibular tusk, late 1890s or early 1900s

Pleistocene Fauna, mastodon mandibular tusk, late 1890s or early 1900s

Pleistocene Fauna, grinding surface of 6th upper molar of Mastodon americanus Kerr from a well, Mapleton, Iowa, late 1890s or early 1900s

Pleistocene Fauna, grinding surface of 6th upper molar of Mastodon americanus Kerr from a well, Mapleton, Iowa, late 1890s or early 1900s

Pleistocene Fauna, right upper 6th molar of Mammoth mirificum Leidy, Mastodon mirificum Leidy, reached in digging well through Kansan Drift on Mr. Jensen's farm near Akron, Iowa, late 1890s or early 1900s

Pleistocene Fauna, right upper 6th molar of Mammoth mirificum Leidy, Mastodon mirificum Leidy, reached in digging well through Kansan Drift on Mr. Jensen's farm near Akron, Iowa, late 1890s or early 1900s

Pleistocene Fauna, side view of a mastodon jaw, 6th molar in place, but much worn, late 1890s or early 1900s

Pleistocene Fauna, side view of a mastodon jaw, 6th molar in place, but much worn, late 1890s or early 1900s