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Pleistocene beds with Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, Loess, Muscatine, Iowa, late 1890s or early 1900s

Pleistocene beds with Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, Loess, Muscatine, Iowa, late 1890s or early 1900s

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

See 553 and 554, same view, beds lettered.

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

See 553, same view, beds lettered.

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

Aftonian, Kansan Drift, Buchanan gravels, Illinoian Drift, Sangamon sands, and Loess, Muscatine, Iowa, late 1890s or early 1900s

Favosites niagarensis, with stems of Amplexus associated with it, Monticello, Iowa, late 1890s or early 1900s

Favosites niagarensis, with stems of Amplexus associated with it, Monticello, Iowa, late 1890s or early 1900s

Located 6 miles southeast of Monticello.

Slab of limestone from the Middle Devonian with long winged variety of Spirifer Mucronatus con of natural size, late 1890s or early 1900s

Slab of limestone from the Middle Devonian with long winged variety of Spirifer Mucronatus con of natural size, late 1890s or early 1900s

Near Arkona. Class plate.

Old green shales bed of the Lower Trenton with natural size Orthis Dlamanella,subeauata, con. and Orthis Tricenaria con, Waukon, Iowa, late 1890s or early 1900s

Old green shales bed of the Lower Trenton with natural size Orthis Dlamanella,subeauata, con. and Orthis Tricenaria con, Waukon, Iowa, late 1890s or early 1900s

Cacops aspidephorus an amphibian from the Permian Period,

Cacops aspidephorus an amphibian from the Permian Period,

Probably from Williston, Texas.

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

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

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

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