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searching for Rudolf Ruedemann 2 found (5 total)

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Trempealeau Formation (69 words) [view diff] exact match in snippet view article find links to article

(PDF). LANSING, MICHIGAN: MICHIGAN DEPARTMENT OF NATURAL RESOURCES.  "Trempealeau Formation". USGS.  Rudolf Ruedemann. Graptolites of North America. 
Dictyonema (graptolites) (241 words) [view diff] exact match in snippet view article
Tremadoc de la Pologne. Palaeontologica Polonica 3: I-XII, 1-235. Rudolf Ruedemann - Graptolites of North America – Geological Society of America Christopher