Key Phrases - Statistically Improbable Phrases (SIPs):
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galena group, trilobite pygidia, regressive limestone, collecting yielded, unidentified branching, brown dolomitic limestone, crinoid columns, nearshore shale, unidentified solitary, black fissile shale, grayish shale, crinoid crowns, crinoid columnals, transgressive limestone, lacy bryozoans, branching bryozoans, echinoderm debris, trilobite fragments, tan limestone, few other fossils, few brachiopods, productid brachiopods, spiriferid brachiopods, gray shale, other brachiopods
Key Phrases - Capitalized Phrases (CAPs):
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Madison County, Bryozoans Branching, Fort Dodge, Allamakee County, Brachiopods Chonetes, Cherokee Group, Middle River, Des Moines River, Des Moines County, Hampton Formation, Gastropods Straparollus, Scotch Grove Formation, Corals Lophophyllum, Kansas City Group, Stoner Member, Burlington Formation, Dyson Hollow, Webster County, Cerro Gordo Member, Jordan Formation, English River Formation, Hopkinton Formation, Cambrian Period, Clayton County, Weeping Water
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