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T. J. Palmer
Burrows at certain omission surfaces in the Middle Ordovician of the Upper Mississippi Valley
Journal of Paleontology (January 1978), 52(1):109-117

Index Terms/Descriptors:
burrows; Champlainian; corrosion zones; Decorah; diagenesis; Galena Dolomite; hardgrounds; ichnofossils; Illinois; Iowa; Middle Ordovician; Minnesota; Mississippi Valley; morphology; new taxa; omission surfaces; Ordovician; paleontology; Paleozoic; Rivoli Member; Scalaridomus; Scalaridomus flexuosus; sediments; syngenesis; taxonomy; Trentonian; United States; Upper Mississippi Valley; Wisconsin

Latitude & Longitude:
N37°00'00" - N42°30'00" and W91°30'00" - W87°30'00" (Search for maps and images at Alexandria Digital Library)
N40°25'00" - N43°30'00" and W96°35'00" - W90°10'00" (Search for maps and images at Alexandria Digital Library)
N43°30'00" - N49°00'00" and W97°10'00" - W89°45'00" (Search for maps and images at Alexandria Digital Library)
N42°30'00" - N47°00'00" and W92°50'00" - W86°45'00" (Search for maps and images at Alexandria Digital Library)

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