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2. Silicified Late Ordovician trilobites from the Mackenzie Mountains, Northwest Territories, Canada
3. Die Silurische Fauna des Westlichen Tenn. : Eine Palaeontologische Monographie
4. Some hitherto unfigured Ordovician cephalopods from Anticosti Island
5. Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian Basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia
6. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Fayette County, Ohio to Botetourt County, Virginia
7. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Lake County, Ohio, to Juniata County, Pennsylvania
8. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Medina County, Ohio, through southwestern and south-central Pennsylvania to Hampshire County, West Virginia
9. Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Richland County, Ohio to Rockingham County, Virginia
10. Stratigraphic nomenclature of Cambrian and Lower Ordovician rocks of eastern-most southern Arizona and adjacent western-most New Mexico
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