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The correlation of the Upper Cambrian sections of Missouri and Texas with the section in the upper Mississippi Valley
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Year: 1937 Publisher: Washington : United States Department of the Interior, Geological Survey,

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Porvenir formation (new name)--and other revisions of nomenclature of Mississippian, Pennsylvanian, and lower Permian rocks, southeastern Sangre de Cristo Mountains, New Mexico
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Year: 1984 Publisher: [Reston, Va.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office.

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Cambrian trilobites of east-central Alaska
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Year: 1968 Publisher: Washington : United States Department of the Interior, Geological Survey,

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Salterella from the Lower Cambrian of central Nevada
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Year: 1970 Publisher: Washington : United States Department of the Interior, Geological Survey,

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"Description and illustration of an unusual fossil having laminated inner deposits containing heavy minerals."


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Aechminella, Amphissites, Kirkbyella, and related genera
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Year: 1961 Publisher: Washington : United States Department of the Interior, Geological Survey,

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Paleozoic species of Bairdia and related genera
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Year: 1960 Publisher: Washington : United States Department of the Interior, Geological Survey,

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Preliminary report on buried pre-Mesozoic rocks in Florida and adjacent states
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Year: 1951 Publisher: Washington, D.C. : United States Department of the Interior, Geological Survey,

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Some paleozoic sections in Arizona and their correlation
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Year: 1916 Publisher: [Washington] : [Department of the Interior, United States Geological Survey],

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Trilobites of the Upper Cambrian Dunderberg shale, Eureka District, Nevada
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Year: 1960 Publisher: Washington : United States Department of the Interior, Geological Survey,

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Geology of Precambrian rocks, Idaho Springs district, Colorado
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Year: 1964 Publisher: Washington, D.C. : Washington, D.C. : United States Department of the Interior, Geological Survey, Government Printing Office.

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